/**
* {@inheritdoc}
*/
public function submitForm(array &$form, FormStateInterface $form_state)
{
$this->ipManager->unbanIp($this->banIp);
$this->logger('user')->notice('Deleted %ip', array('%ip' => $this->banIp));
drupal_set_message($this->t('The IP address %ip was deleted.', array('%ip' => $this->banIp)));
$form_state->setRedirectUrl($this->getCancelUrl());
}