docs(monitors): 移除已下线的规则与查询 API

[UlricQin]

变更说明

• 从中英文 Monitors OpenAPI 和聚合 OpenAPI 中移除：
  • POST /monit/rule/status
  • POST /monit/preview/sync
  • POST /monit/query/rows
• 移除 QueryRows 相关 schema，保留独立的 QueryDataRequest。
• 同步导航、API 目录、CLI/Go SDK 文档和接口计数。
• 最新聚合 OpenAPI 为 335 个接口，Monitors 为 39 个接口。

关联 WebAPI PR：https://github.com/flashcatcloud/monit-webapi/pull/94

验证

• 所有修改后的 OpenAPI JSON 均通过解析。
• mint validate 通过。

[ysyneu]

Superseded by #322, which covers the same retirement of /monit/rule/status, /monit/preview/sync and /monit/query/rows (specs, catalog, CLI/SDK references — the cli.mdx / go-sdk.mdx updates from this PR are absorbed there) and additionally syncs the full specs with current backend handlers.

Two deliberate differences:

• api-reference/openapi.legacy.zh.json is left untouched — it is a frozen historical export, kept read-only by convention.
• The retired QueryRowsRequest schema is kept because the live QueryDataRequest (/monit/query/data) still references it.

Thanks for the cleanup — the nav entries were already dropped in 7ff481b, so #322 completes the remaining surfaces.