Form constructor to unban an IP address.
array $ban_ip: The IP address record to unban, as provided by ban_ip_load().
ban_ip_delete_submit()
function ban_ip_delete_form($form, &$form_state, array $ban_ip) {
$form['ban_ip'] = array(
'#type' => 'value',
'#value' => $ban_ip,
);
return confirm_form($form, t('Are you sure you want to unblock %ip?', array(
'%ip' => $ban_ip['ip'],
)), 'admin/config/people/ban', NULL, t('Delete'));
}