diff --git a/src/js/_enqueues/admin/common.js b/src/js/_enqueues/admin/common.js
index 2a7daba0d2dc4..bf9aa5163e389 100644
--- a/src/js/_enqueues/admin/common.js
+++ b/src/js/_enqueues/admin/common.js
@@ -16,357 +16,7 @@
 	var $document = $( document ),
 		$window = $( window ),
 		$body = $( document.body ),
-		__ = wp.i18n.__,
-		sprintf = wp.i18n.sprintf;
-
-/**
- * Throws an error for a deprecated property.
- *
- * @since 5.5.1
- *
- * @param {string} propName    The property that was used.
- * @param {string} version     The version of WordPress that deprecated the property.
- * @param {string} replacement The property that should have been used.
- */
-function deprecatedProperty( propName, version, replacement ) {
-	var message;
-
-	if ( 'undefined' !== typeof replacement ) {
-		message = sprintf(
-			/* translators: 1: Deprecated property name, 2: Version number, 3: Alternative property name. */
-			__( '%1$s is deprecated since version %2$s! Use %3$s instead.' ),
-			propName,
-			version,
-			replacement
-		);
-	} else {
-		message = sprintf(
-			/* translators: 1: Deprecated property name, 2: Version number. */
-			__( '%1$s is deprecated since version %2$s with no alternative available.' ),
-			propName,
-			version
-		);
-	}
-
-	window.console.warn( message );
-}
-
-/**
- * Deprecate all properties on an object.
- *
- * @since 5.5.1
- * @since 5.6.0 Added the `version` parameter.
- *
- * @param {string} name       The name of the object, i.e. commonL10n.
- * @param {object} l10nObject The object to deprecate the properties on.
- * @param {string} version    The version of WordPress that deprecated the property.
- *
- * @return {object} The object with all its properties deprecated.
- */
-function deprecateL10nObject( name, l10nObject, version ) {
-	var deprecatedObject = {};
-
-	Object.keys( l10nObject ).forEach( function( key ) {
-		var prop = l10nObject[ key ];
-		var propName = name + '.' + key;
-
-		if ( 'object' === typeof prop ) {
-			Object.defineProperty( deprecatedObject, key, { get: function() {
-				deprecatedProperty( propName, version, prop.alternative );
-				return prop.func();
-			} } );
-		} else {
-			Object.defineProperty( deprecatedObject, key, { get: function() {
-				deprecatedProperty( propName, version, 'wp.i18n' );
-				return prop;
-			} } );
-		}
-	} );
-
-	return deprecatedObject;
-}
-
-window.wp.deprecateL10nObject = deprecateL10nObject;
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 2.6.0
- * @deprecated 5.5.0
- */
-window.commonL10n = window.commonL10n || {
-	warnDelete: '',
-	dismiss: '',
-	collapseMenu: '',
-	expandMenu: ''
-};
-
-window.commonL10n = deprecateL10nObject( 'commonL10n', window.commonL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 3.3.0
- * @deprecated 5.5.0
- */
-window.wpPointerL10n = window.wpPointerL10n || {
-	dismiss: ''
-};
-
-window.wpPointerL10n = deprecateL10nObject( 'wpPointerL10n', window.wpPointerL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 4.3.0
- * @deprecated 5.5.0
- */
-window.userProfileL10n = window.userProfileL10n || {
-	warn: '',
-	warnWeak: '',
-	show: '',
-	hide: '',
-	cancel: '',
-	ariaShow: '',
-	ariaHide: ''
-};
-
-window.userProfileL10n = deprecateL10nObject( 'userProfileL10n', window.userProfileL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 4.9.6
- * @deprecated 5.5.0
- */
-window.privacyToolsL10n = window.privacyToolsL10n || {
-	noDataFound: '',
-	foundAndRemoved: '',
-	noneRemoved: '',
-	someNotRemoved: '',
-	removalError: '',
-	emailSent: '',
-	noExportFile: '',
-	exportError: ''
-};
-
-window.privacyToolsL10n = deprecateL10nObject( 'privacyToolsL10n', window.privacyToolsL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 3.6.0
- * @deprecated 5.5.0
- */
-window.authcheckL10n = {
-	beforeunload: ''
-};
-
-window.authcheckL10n = window.authcheckL10n || deprecateL10nObject( 'authcheckL10n', window.authcheckL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 2.8.0
- * @deprecated 5.5.0
- */
-window.tagsl10n = {
-	noPerm: '',
-	broken: ''
-};
-
-window.tagsl10n = window.tagsl10n || deprecateL10nObject( 'tagsl10n', window.tagsl10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 2.5.0
- * @deprecated 5.5.0
- */
-window.adminCommentsL10n = window.adminCommentsL10n || {
-	hotkeys_highlight_first: {
-		alternative: 'window.adminCommentsSettings.hotkeys_highlight_first',
-		func: function() { return window.adminCommentsSettings.hotkeys_highlight_first; }
-	},
-	hotkeys_highlight_last: {
-		alternative: 'window.adminCommentsSettings.hotkeys_highlight_last',
-		func: function() { return window.adminCommentsSettings.hotkeys_highlight_last; }
-	},
-	replyApprove: '',
-	reply: '',
-	warnQuickEdit: '',
-	warnCommentChanges: '',
-	docTitleComments: '',
-	docTitleCommentsCount: ''
-};
-
-window.adminCommentsL10n = deprecateL10nObject( 'adminCommentsL10n', window.adminCommentsL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 2.5.0
- * @deprecated 5.5.0
- */
-window.tagsSuggestL10n = window.tagsSuggestL10n || {
-	tagDelimiter: '',
-	removeTerm: '',
-	termSelected: '',
-	termAdded: '',
-	termRemoved: ''
-};
-
-window.tagsSuggestL10n = deprecateL10nObject( 'tagsSuggestL10n', window.tagsSuggestL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 3.5.0
- * @deprecated 5.5.0
- */
-window.wpColorPickerL10n = window.wpColorPickerL10n || {
-	clear: '',
-	clearAriaLabel: '',
-	defaultString: '',
-	defaultAriaLabel: '',
-	pick: '',
-	defaultLabel: ''
-};
-
-window.wpColorPickerL10n = deprecateL10nObject( 'wpColorPickerL10n', window.wpColorPickerL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 2.7.0
- * @deprecated 5.5.0
- */
-window.attachMediaBoxL10n = window.attachMediaBoxL10n || {
-	error: ''
-};
-
-window.attachMediaBoxL10n = deprecateL10nObject( 'attachMediaBoxL10n', window.attachMediaBoxL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 2.5.0
- * @deprecated 5.5.0
- */
-window.postL10n = window.postL10n || {
-	ok: '',
-	cancel: '',
-	publishOn: '',
-	publishOnFuture: '',
-	publishOnPast: '',
-	dateFormat: '',
-	showcomm: '',
-	endcomm: '',
-	publish: '',
-	schedule: '',
-	update: '',
-	savePending: '',
-	saveDraft: '',
-	'private': '',
-	'public': '',
-	publicSticky: '',
-	password: '',
-	privatelyPublished: '',
-	published: '',
-	saveAlert: '',
-	savingText: '',
-	permalinkSaved: ''
-};
-
-window.postL10n = deprecateL10nObject( 'postL10n', window.postL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 2.7.0
- * @deprecated 5.5.0
- */
-window.inlineEditL10n = window.inlineEditL10n || {
-	error: '',
-	ntdeltitle: '',
-	notitle: '',
-	comma: '',
-	saved: ''
-};
-
-window.inlineEditL10n = deprecateL10nObject( 'inlineEditL10n', window.inlineEditL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 2.7.0
- * @deprecated 5.5.0
- */
-window.plugininstallL10n = window.plugininstallL10n || {
-	plugin_information: '',
-	plugin_modal_label: '',
-	ays: ''
-};
-
-window.plugininstallL10n = deprecateL10nObject( 'plugininstallL10n', window.plugininstallL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 3.0.0
- * @deprecated 5.5.0
- */
-window.navMenuL10n = window.navMenuL10n || {
-	noResultsFound: '',
-	warnDeleteMenu: '',
-	saveAlert: '',
-	untitled: ''
-};
-
-window.navMenuL10n = deprecateL10nObject( 'navMenuL10n', window.navMenuL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 2.5.0
- * @deprecated 5.5.0
- */
-window.commentL10n = window.commentL10n || {
-	submittedOn: '',
-	dateFormat: ''
-};
-
-window.commentL10n = deprecateL10nObject( 'commentL10n', window.commentL10n, '5.5.0' );
-
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 2.9.0
- * @deprecated 5.5.0
- */
-window.setPostThumbnailL10n = window.setPostThumbnailL10n || {
-	setThumbnail: '',
-	saving: '',
-	error: '',
-	done: ''
-};
-
-window.setPostThumbnailL10n = deprecateL10nObject( 'setPostThumbnailL10n', window.setPostThumbnailL10n, '5.5.0' );
-
-/**
- * Removed in 6.5.0, needed for back-compatibility.
- *
- * @since 4.5.0
- * @deprecated 6.5.0
- */
-window.uiAutocompleteL10n = window.uiAutocompleteL10n || {
-	noResults: '',
-	oneResult: '',
-	manyResults: '',
-	itemSelected: ''
-};
-
-window.uiAutocompleteL10n = deprecateL10nObject( 'uiAutocompleteL10n', window.uiAutocompleteL10n, '6.5.0' );
+		__ = wp.i18n.__;
 
 /**
  * Removed in 3.3.0, needed for back-compatibility.
diff --git a/src/js/_enqueues/admin/widgets.js b/src/js/_enqueues/admin/widgets.js
index e8fc42507d382..dbffff393d694 100644
--- a/src/js/_enqueues/admin/widgets.js
+++ b/src/js/_enqueues/admin/widgets.js
@@ -745,19 +745,3 @@ $( function(){ wpWidgets.init(); } );
 
 })(jQuery);
 
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 4.9.0
- * @deprecated 5.5.0
- *
- * @type {object}
-*/
-wpWidgets.l10n = wpWidgets.l10n || {
-	save: '',
-	saved: '',
-	saveAlert: '',
-	widgetAdded: ''
-};
-
-wpWidgets.l10n = window.wp.deprecateL10nObject( 'wpWidgets.l10n', wpWidgets.l10n, '5.5.0' );
diff --git a/src/js/_enqueues/wp/dashboard.js b/src/js/_enqueues/wp/dashboard.js
index 5216611d5dc3c..c2e00732aef04 100644
--- a/src/js/_enqueues/wp/dashboard.js
+++ b/src/js/_enqueues/wp/dashboard.js
@@ -826,20 +826,3 @@ jQuery( function( $ ) {
 	}
 });
 
-/**
- * Removed in 5.6.0, needed for back-compatibility.
- *
- * @since 4.8.0
- * @deprecated 5.6.0
- *
- * @type {object}
-*/
-window.communityEventsData.l10n = window.communityEventsData.l10n || {
-	enter_closest_city: '',
-	error_occurred_please_try_again: '',
-	attend_event_near_generic: '',
-	could_not_locate_city: '',
-	city_updated: ''
-};
-
-window.communityEventsData.l10n = window.wp.deprecateL10nObject( 'communityEventsData.l10n', window.communityEventsData.l10n, '5.6.0' );
diff --git a/src/js/_enqueues/wp/theme-plugin-editor.js b/src/js/_enqueues/wp/theme-plugin-editor.js
index 7bcff376e9ff2..b6410806ec3f9 100644
--- a/src/js/_enqueues/wp/theme-plugin-editor.js
+++ b/src/js/_enqueues/wp/theme-plugin-editor.js
@@ -1029,26 +1029,3 @@ wp.themePluginEditor = (function( $ ) {
 	return component;
 })( jQuery );
 
-/**
- * Removed in 5.5.0, needed for back-compatibility.
- *
- * @since 4.9.0
- * @deprecated 5.5.0
- *
- * @type {object}
- */
-wp.themePluginEditor.l10n = wp.themePluginEditor.l10n || {
-	saveAlert: '',
-	saveError: '',
-	lintError: {
-		alternative: 'wp.i18n',
-		func: function() {
-			return {
-				singular: '',
-				plural: ''
-			};
-		}
-	}
-};
-
-wp.themePluginEditor.l10n = window.wp.deprecateL10nObject( 'wp.themePluginEditor.l10n', wp.themePluginEditor.l10n, '5.5.0' );
diff --git a/src/js/_enqueues/wp/theme.js b/src/js/_enqueues/wp/theme.js
index 56107ee475057..82799f9b2cb5f 100644
--- a/src/js/_enqueues/wp/theme.js
+++ b/src/js/_enqueues/wp/theme.js
@@ -1277,7 +1277,7 @@ themes.view.Themes = wp.Backbone.View.extend({
 				$modal.find( '.notice-warning' )
 					.removeClass( 'notice-large' )
 					.addClass( 'updating-message' )
-					.find( 'p' ).text( wp.updates.l10n.updating );
+					.find( 'p' ).text( wp.i18n.__( 'Updating...' ) );
 			} else if ( $card.find( '.notice-error' ).length ) {
 				$modal.find( '.notice-warning' ).remove();
 			}
diff --git a/src/js/_enqueues/wp/updates.js b/src/js/_enqueues/wp/updates.js
index ef4b47e66093e..706c4f9950725 100644
--- a/src/js/_enqueues/wp/updates.js
+++ b/src/js/_enqueues/wp/updates.js
@@ -48,81 +48,6 @@
 	 */
 	wp.updates = {};
 
-	/**
-	 * Removed in 5.5.0, needed for back-compatibility.
-	 *
-	 * @since 4.2.0
-	 * @deprecated 5.5.0
-	 *
-	 * @type {object}
-	 */
-	wp.updates.l10n = {
-		searchResults: '',
-		searchResultsLabel: '',
-		noPlugins: '',
-		noItemsSelected: '',
-		updating: '',
-		pluginUpdated: '',
-		themeUpdated: '',
-		update: '',
-		updateNow: '',
-		pluginUpdateNowLabel: '',
-		updateFailedShort: '',
-		updateFailed: '',
-		pluginUpdatingLabel: '',
-		pluginUpdatedLabel: '',
-		pluginUpdateFailedLabel: '',
-		updatingMsg: '',
-		updatedMsg: '',
-		updateCancel: '',
-		beforeunload: '',
-		installNow: '',
-		pluginInstallNowLabel: '',
-		installing: '',
-		pluginInstalled: '',
-		themeInstalled: '',
-		installFailedShort: '',
-		installFailed: '',
-		pluginInstallingLabel: '',
-		themeInstallingLabel: '',
-		pluginInstalledLabel: '',
-		themeInstalledLabel: '',
-		pluginInstallFailedLabel: '',
-		themeInstallFailedLabel: '',
-		installingMsg: '',
-		installedMsg: '',
-		importerInstalledMsg: '',
-		aysDelete: '',
-		aysDeleteUninstall: '',
-		aysBulkDelete: '',
-		aysBulkDeleteThemes: '',
-		deleting: '',
-		deleteFailed: '',
-		pluginDeleted: '',
-		themeDeleted: '',
-		livePreview: '',
-		activatePlugin: '',
-		activateTheme: '',
-		activatePluginLabel: '',
-		activateThemeLabel: '',
-		activateImporter: '',
-		activateImporterLabel: '',
-		unknownError: '',
-		connectionError: '',
-		nonceError: '',
-		pluginsFound: '',
-		noPluginsFound: '',
-		autoUpdatesEnable: '',
-		autoUpdatesEnabling: '',
-		autoUpdatesEnabled: '',
-		autoUpdatesDisable: '',
-		autoUpdatesDisabling: '',
-		autoUpdatesDisabled: '',
-		autoUpdatesError: ''
-	};
-
-	wp.updates.l10n = window.wp.deprecateL10nObject( 'wp.updates.l10n', wp.updates.l10n, '5.5.0' );
-
 	/**
 	 * User nonce for ajax calls.
 	 *
diff --git a/src/wp-includes/script-loader.php b/src/wp-includes/script-loader.php
index 42d42b3f8781d..8a9865cab8e65 100644
--- a/src/wp-includes/script-loader.php
+++ b/src/wp-includes/script-loader.php
@@ -1488,7 +1488,7 @@ function wp_default_scripts( $scripts ) {
 		$scripts->add( 'privacy-tools', "/wp-admin/js/privacy-tools$suffix.js", array( 'jquery', 'wp-a11y' ), false, 1 );
 		$scripts->set_translations( 'privacy-tools' );
 
-		$scripts->add( 'updates', "/wp-admin/js/updates$suffix.js", array( 'common', 'jquery', 'wp-util', 'wp-a11y', 'wp-sanitize', 'wp-i18n' ), false, 1 );
+		$scripts->add( 'updates', "/wp-admin/js/updates$suffix.js", array( 'jquery', 'wp-util', 'wp-a11y', 'wp-sanitize', 'wp-i18n' ), false, 1 );
 		$scripts->set_translations( 'updates' );
 		did_action( 'init' ) && $scripts->localize(
 			'updates',