**Reason**:
tests indicate archive - https://gerrit.wikimedia.org/r/#/c/integration/config/+/454856/
Linking T199032 and T183512
- This task
-- [x] Add maintainers of that extension as subscribers to this task (if they have no apparent Phabricator account, notify them on-wiki or via email if possible and note it here).
-- [x] Add Phabricator project <#ProjectX> as a tag for this task, or #mediawiki-extensions-other/#other-skins if there is no project.
- On-wiki documentation
-- [ ] Archive documentation on `mediawiki.org` (provide URL): replace page contents with `{{TNT|Archived extension|last revision id before archiving|reason=archive reasons}}` (for extensions); include a link to this task in the `reason` parameter. If that documentation was translatable, remove `<translate>`, visit Special:PageTranslation, and click "remove from translation" (if you don't have the translation administrator right, ask a [[ https://www.mediawiki.org/wiki/Special:ListUsers/translationadmin | user who does ]]).
-- [ ] Archive Wikidata item associated with documentation page (provide URL) (remove nearly all statements, except `instance of (P31) = MediaWiki extension (Q6805426)`, which should add a qualifier `end time (P582) = the YYYY-MM-DD date that you decided to archive extension, generally per edit history`, change English (and other languages if possible) description to "archived MediaWiki extension" (and its translation)).
- Phabricator
-- [ ] Archive Phabricator project #Mooc-Interface for associated extension.
-- [ ] Mark all Phabricator tasks for the extension/skin either Declined or Invalid.
-- [ ] Edit Phabricator project #Mooc-Interface description for associated extension with a link to this ticket.
- Translatewiki.net/translations
-- [ ] Remove from `translatewiki.net` (`groups/MediaWiki/mediawiki-extensions.txt` / `groups/MediaWiki/mediawiki-skins.txt`).
- Configuration/tests/integrations/etc.
-- [x] Remove from `mediawiki/extensions` (along with in `.gitmodules`).
-- [x] Remove tests in [[ https://gerrit.wikimedia.org/g/integration/config | `integration/config` ]] (`zuul/layout.yaml`).
-- [ ] Remove manifest/other references from `mediawiki/vagrant` if they exist.
-- [ ] Remove from https://doc.wikimedia.org/cover-extensions/ if present (requires #continuous-integration-infrastructure shell user to delete directly from the server).
- Repositories
-- [ ] Empty repository and add an ARCHIVED file.
-- [ ] Archive the extension's diffusion repository: (provide the Diffusion repository callsign or URL).
-- [ ] Mark the repository read-only in Gerrit: (provide Gerrit Repository URL).
-- [ ] Delete the GitHub mirror: (provide GitHub repository URL).