&gt; SpahQL
      </li>
    
      <li>
        <code class="argument-name">callback</code>
        
          <span class="argument-types">(<code>Function</code>)</span>
        
         &ndash; The function registered as a callback using #listen
      </li>
    
  </ul> <!-- .argument-list -->

      

      <p>Removes a listener previously created with #listen, accepting the same objects as arguments in order to identify the listener being destroyed.</p>

<p>Returns self.</p>
      
      




      
  