Based on feedback provided in Gerrit patch 807177, the Group::insertAfter() function should first be deprecated before being deleted.
A hard deprecation is being chosen over a soft deprecation because this function is unused in the codebase. More information about deprecation can be found here.
If the deprecated code is unused in Wikimedia maintained code at the time of deprecation, it SHOULD be hard deprecated immediately.
Acceptance criteria
- The code is hard deprecated
- The deprecation appears in the release notes