remove ID overrides when deleting a user

patch fixes a regression introduced during user-del refactoring

https://fedorahosted.org/freeipa/ticket/5365

Reviewed-By: Tomas Babej <tbabej@redhat.com>

ipalib/plugins/user.py

@@ -688,6 +688,12 @@ class user_del(baseuser_del):
                 else:
                     self.api.Command.otptoken_del(token)
 
+        # Remove any ID overrides tied with this user
+        try:
+            remove_ipaobject_overrides(self.obj.backend, self.obj.api, dn)
+        except errors.NotFound:
+            self.obj.handle_not_found(*keys)
+
         return dn
 
     def execute(self, *keys, **options):