/**
  * Remove file
  *
  * @param  string  $path  file path
  * @return bool
  * @author Dmitry (dio) Levashov
  **/
 protected function _unlink($path)
 {
     try {
         $this->dropbox->delete($path);
     } catch (Dropbox_Exception $e) {
         return $this->setError('Dropbox error: ' . $e->getMessage());
     }
     $this->deltaCheck();
     return true;
 }