Jk/delete registration

mo/web/org_users.py

@@ -593,7 +593,7 @@ def org_user_participant_edit(user_id: int, year: int):
         if sess.is_modified(participant):
             changes = db.get_object_changes(participant)
 
-            app.logger.info(f"Participant id {id} year {year} modified, changes: {changes}")
+            app.logger.info(f"Participant id {user_id} year {year} modified, changes: {changes}")
             mo.util.log(
                 type=db.LogType.participant,
                 what=user_id,