title: How do i remove the label decorator from a submit button
body: <p>In my form i have this code;</p>
  
  <pre><code>// Add the submit button
  $element = $this-&gt;addElement('submit', 'submit', array(
      'ignore'   =&gt; true,
      'label' =&gt; 'Add new material'
  ));
  $element-&gt;removeDecorator('label');
  </code></pre>
  
  <p>However the form still renders with the label element between the  tags.</p>
  
  <p>What am i doing wrong?</p>