The CheckUserInsertForRecentChangeHook has been deprecated since 1.40 and hard-deprecated since b1f12e4a5dd3a0a48f216c90c6cc7791ad68d140 (in REL1_42 and merged more than 3 months ago). As such, per the stable interface policy. it should be safe to remove the hook now.
Removing the hook is useful as it is not run for any events that are inserted into the cu_log_event or cu_private_event table. The hook can be replaced by using the any of the CheckUserInsertChangesRowHook, CheckUserInsertLogEventRowHook, and CheckUserInsertPrivateEventRowHook.
Acceptance criteria
- Remove the hard-deprecated CheckUserInsertForRecentChange hook.