According to the OBSOLETE file  in SVN, Oversight/HideRevision was made obsolete in core itself in 1.16, and was supposed to be deleted from the repo at 1.17
Is there any reason we can't just disable it?
Do we need to do any config migration (Aaron?)?
Or is it enough just to remove "require( "$IP/extensions/Oversight/HideRevision.php" );" from CommonSettings.php?