All Wikidata browsertests have been moved to Wikibase.git in https://gerrit.wikimedia.org/r/300508 and tests are run against https://wikidata.beta.wmflabs.org and https://test.wikidata.org in https://integration.wikimedia.org/ci/job/selenium-Wikibase, so https://gerrit.wikimedia.org/r/#/admin/projects/wikidata/browsertests could be deleted after we removed https://integration.wikimedia.org/ci/job/selenium-Wikidata.
- Remove the repository from Translatewiki.net by requesting it on the Support page in translatewiki.net or in Wikimedia Phabricator.
- Remove all files in a new commit or make a commit that disables the software contained in it. Done: https://gerrit.wikimedia.org/r/#/c/308563/
- Set the state in Gerrit to read only/hidden.
- Remove it from CI/Zuul. Done: https://gerrit.wikimedia.org/r/307940
Additionally:
- Decide how to deal with https://github.com/wikimedia/wikidata-browsertests