Don't delete the groups used in the Post test, they're needed. May want to make

mock groups in the future. Also clean up some commented out things from
Collaboration.t.

t/Asset/Post.t

@@ -122,8 +122,6 @@ END {
     $postingUser->delete();
     $otherUser->delete();
     $groupIdEditUser->delete();
-    $groupToEditPost->delete();
-    $groupIdEditGroup->delete();
 }