title: How to remove 'select all' option from multiselect listbox
body: <p>I have a multiselect dropdown. There is a 'Select All' which I want to remove as requested by my client. How can I do that?</p>
  
  <pre><code>&lt;asp:ListBox ID="CmbInterviewer" runat="server" SelectionMode="multiple" CssClass="form-border"&gt;&lt;/asp:ListBox&gt;
  </code></pre>
  
  <pre class="lang-js prettyprint-override"><code>$("#CmbInterviewer").multiselect({
    includeSelectAllOption: true,
    enableFiltering: true,
    numberDisplayed: 10,
    nonSelectedText: '&lt;-Select-&gt;',
    buttonWidth: '100%',
    enableCaseInsensitiveFiltering: true,
    maxHeight: 200
  });
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/3eYl2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3eYl2.png" alt="enter image description here"></a></p>