Update Travis MySQL config

Author: ivanvermeyen

.travis.yml

@@ -4,6 +4,8 @@ php:
   - 7.2
   - 7.3
 
+dist: xenial
+
 services:
   - mysql
 
@@ -16,12 +18,6 @@ cache:
 before_script:
   - travis_retry composer self-update
   - travis_retry composer update --no-interaction
-  - echo mysql-apt-config mysql-apt-config/select-server select mysql-5.7 | sudo debconf-set-selections
-  - wget https://dev.mysql.com/get/mysql-apt-config_0.7.3-1_all.deb
-  - sudo dpkg --install mysql-apt-config_0.7.3-1_all.deb
-  - sudo apt-get update -q
-  - sudo apt-get install -q -y --allow-unauthenticated -o Dpkg::Options::=--force-confnew mysql-server
-  - sudo mysql_upgrade
   - mysql -e "create database IF NOT EXISTS testing;" -uroot;
 
 script: