fix duplicate user

enrollments-events/app/events/restore_seat_on_scheduled_canceled.py

@@ -30,7 +30,6 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
             key=KeyPair(
                 pk=order_id,
                 sk=f'ENROLLMENT#{enrollment_id}',
-                table_name=ORDER_TABLE,
             ),
             cond_expr='attribute_exists(sk) AND #status = :scheduled',
             update_expr='SET #status = :rollback, \