Cartalyst\Sentinel\Sentinel::removeCheckpoint PHP Method

    public function removeCheckpoint($key)
    {
        if (isset($this->checkpoints[$key])) {
            unset($this->checkpoints[$key]);
        }
    }

 /**
  * Removes a checkpoint.
  *
  * @param  string $key
  *
  * @return void
  */
 public function removeCheckpoint($key)
 {
     $this->sentinel->removeCheckpoint($key);
 }