title: Remove an option from a Zend Radio Form Element
body: <p>An easy question.
  I have a Zend_Form_Element_Radio element in my form with multioptions.
  I'd like to remove an option in my controller.</p>
  
  <p>I've found how to disable an option ...</p>
  
  <pre><code>$element = $membershipForm-&gt;getElement('myElement');
  $element-&gt;setAttrib('disable', array('value'));
  </code></pre>
  
  <p>But how can I remove it?
  With removing some decorators? Or is there a better way?</p>
  
  <p>Thanks in advance!</p>