Remove unused methods
What does this MR do?
Remove unused methods, as part of v3.
This should make the code refactoring easier.
Changelog entry is TBD later.
What are the relevant issue numbers?
gitlab-org/gitlab#386070 (comment 1821312900)
Does this MR meet the acceptance criteria?
-
Changelog entry added -
Documentation created/updated for this project, if necessary -
Tests added for this feature/bug -
Conforms to the code review guidelines -
Security reports checked/validated by reviewer