Following T245860 PerRepositoryServiceContainer and MultipleRepositoryAwareWikibaseServices service containers, as well as their "wiring files" are no longer used.
- Remove MultipleRepositoryAwareWikibaseServices: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Wikibase/+/574079
- Remove MultiRepositoryServices: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Wikibase/+/574080
- Remove PerRepositoryServiceContainer: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Wikibase/+/574081
- Remove MediaInfo's MediaInfoPerRepositoryServiceWiring: https://gerrit.wikimedia.org/r/574728
- Remove RepositorySpecificDataValueDeserializerFactory: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Wikibase/+/574082
- Remove UnusableEntitySource: https://gerrit.wikimedia.org/r/574192
- Update the docs: https://gerrit.wikimedia.org/r/577313