[aur-dev] Data left behind from a deleted package

When I recently looked through the AUR source, it seemed to me that when a package is deleted, a record is only removed from the `Packages` table and that there is data for the corresponding package still in `CommentNotify`, `PackageComments`, `PackageContents`, `PackageSources` and `PackageVotes`. Does this orphan data get deleted by another mechanism I haven't seen? If not, could I send patches that do a better job of cleaning it up?