title: Removing a block without a name
body: <p>The code below is added by an extension. I want to remove this block from my local.xml but block doesn't have an name. Is there any way to remove a block that doesn't have a name ?</p>
  
  <pre><code>&lt;reference name="head"&gt;
      &lt;block type="core/template" template="survey/surveyScript.phtml" /&gt;
  &lt;/reference&gt;
  </code></pre>