**Reason**
@ashley wrote on a patch set:
The code is fine and does what it says on the tin, but the extension has a much bigger problem: namely it's been broken since AuthManager was introduced and no-one's maintaining and/or fixing it, and as such it should probably be archived instead.
https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/EditAccount/+/505273/
**To-do list**
- 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 if there is no project. (Requested in T205293)
- On-wiki documentation
-- [x] Archive documentation on `mediawiki.org` (https://www.mediawiki.org/wiki/Extension:EditAccount): replace page contents with `{{Archived extension|3191112|EditUser|reason=Broken since AuthManager was introduced; see also [[phab:T221494]]}}`.
-- [x] If documentation page 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 ]]).
-- [x] Archive Wikidata item associated with documentation page (https://www.wikidata.org/wiki/Q21676224) (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 <#ProjectX> for the extension.~~
-- [x] Mark all Phabricator tasks for the extension either Declined or Invalid.
-- [ ] ~~Edit Phabricator project <#ProjectX> description for the extension with a link to this ticket.~~
- Translatewiki.net/translations
-- [x] Remove from `translatewiki.net` (`groups/MediaWiki/mediawiki-extensions.txt`) (add #translatewiki.net project as a tag for this task).
- 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
-- [x] Empty repository leaving only the README indicating the repo is archived and referring to this task by URL.
-- [x] Mark the repository read-only in Gerrit (Edit description to prepend "[ARCHIVED]" and append Task reference): https://gerrit.wikimedia.org/r/#/admin/projects/mediawiki/extensions/EditAccount
-- [ ] Archive the diffusion repository for the extension: rEEDA
-- [ ] Delete the GitHub mirror: https://github.com/wikimedia/mediawiki-extensions-EditAccount