This extension was unmaintained for years and now no longer works on supported versions of MediaWiki (1.27+).
- [x] Archive documentation on `mediawiki.org` - https://www.mediawiki.org/wiki/Extension:Advanced_Meta ( done by @Kghbln )
- [x] Remove from `mediawiki/extensions` ( along with in `.gitmodules` ) - https://gerrit.wikimedia.org/r/#/c/371639/
- [ ] Remove tests in `intregation/config` ( `zuul/layout.yaml` ) - https://gerrit.wikimedia.org/r/#/c/371640/
- [x] Remove from `translatewiki` ( `groups/MediaWiki/mediawiki-extensions.txt` ) - https://gerrit.wikimedia.org/r/#/c/371641/
- [x] Mark as read-only on Gerrit ( https://gerrit.wikimedia.org/r/#/admin/projects/mediawiki/extensions/AdvancedMeta )
- [x] Deactivate the extension's diffusion repository: ( https://phabricator.wikimedia.org/r/project/mediawiki/extensions/AdvancedMeta )
- [] Merge D747