**Reason**
The service is now no longer deployed at Wikimedia, and is of very little conceivable use to third parties.
**To-do list**
- This task
-- [x] Add maintainers of that service as subscribers to this task.
-- [x] Add Phabricator project #graphoid as a tag for this task.
- On-wiki documentation
-- [ ] Archive [[https://www.mediawiki.org/wiki/Extension:Graph#Graphoid_service|documentation on mediawiki.org]]
-- [ ] Archive [[https://wikitech.wikimedia.org/wiki/Graphoid|documentation on wikitech.wikimedia.org]]
- Phabricator
-- [x] Mark all Phabricator tasks for the service either Declined or Invalid. Add a comment pointing to this task when doing so for reference.
-- [x] Archive Phabricator project #graphoid.
-- [x] Edit Phabricator project #graphoid description with a link to this ticket.
- Configuration/tests/integrations/etc.
-- [ ] Remove tests in [[ https://gerrit.wikimedia.org/g/integration/config | integration/config ]] ([[ https://gerrit.wikimedia.org/r/plugins/gitiles/integration/config/+/master/zuul/layout.yaml | zuul/layout.yaml ]]).
-- [ ] Remove manifest/other references from [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/vagrant/+/master | mediawiki/vagrant ]]: [[https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/vagrant/+/refs/heads/master/puppet/modules/role/manifests/graphoid.pp|graphoid.pp]].
- Repositories
-- [ ] [[https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/services/graphoid/deploy | Deploy repository]]
--- [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 (also edit description to prepend "[ARCHIVED]" and a reference to this task): https://gerrit.wikimedia.org/r/admin/repos/mediawiki/services/graphoid/deploy
--- [x] Archive the Diffusion repository: https://phabricator.wikimedia.org/diffusion/GGRD/
--- [ ] Delete the GitHub mirror: https://github.com/wikimedia/mediawiki-services-graphoid-deploy
-- [ ] [[https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/services/graphoid| Main repository]]
--- [ ] Empty repository, leaving only the README indicating the repo is archived, and referring to this task by URL.
--- [ ] Mark the repository read-only in Gerrit (also edit description to prepend "[ARCHIVED]" and a reference to this task): https://gerrit.wikimedia.org/r/admin/repos/mediawiki/services/graphoid
--- [ ] Archive the Diffusion repository: https://phabricator.wikimedia.org/diffusion/GGRA/
--- [ ] Delete the GitHub mirror: https://github.com/wikimedia/mediawiki-services-graphoid