code: public function ipDeleteMonitoringNotification($id, $ip, $notificationId)
      {
          if (!$id)
              throw new BadMethodCallException('Missing parameter $id.');
          if (!$ip)
              throw new BadMethodCallException('Missing parameter $ip.');
          if (!$notificationId)
              throw new BadMethodCallException('Missing parameter $notificationId.');
          try {
              $r = $this->delete('xdsl/' . $id . '/ips/' . $ip . '/monitoringNotifications/' . $notificationId)->send();
          } catch (\Exception $e) {
              throw new XdslException($e->getMessage(), $e->getCode(), $e);
          }
          return;
      }
docs: Delete Monitoring IP notification
  
  @param  string $id
  @param string $ip
  @param integer $notificationId
  @throws \Ovh\Common\Exception\BadMethodCallException
  @throws Exception\XdslException