docs(automerge): Merge Queue is out of beta (#23358)

docs/usage/key-concepts/automerge.md

@@ -132,11 +132,6 @@ The steps to enable GitHub's Merge Queue differ based on whether you use GitHub
     The page link follows this pattern: `https://github.com/organization-name/repository-name/queue/base-branch-name`.
     For example, here's [Renovate's main repository's Merge Queue overview](https://github.com/renovatebot/renovate/queue/main).
 
-<!-- prettier-ignore -->
-!!! warning "GitHub Merge Queue is in beta"
-    GitHub's Merge Queue feature is labeled as a beta feature by GitHub.
-    The Merge Queue may stop working, have bugs, or you may need to update your configuration when GitHub changes things.
-
 #### If you use GitHub Actions
 
 If you use GitHub Actions as your CI provider, follow these steps: