title: How to Remove duplicate dropdown option elements with same value
body: <p>How can I remove duplicate values -> drop down option elements?<br>
  I have the following HTML:</p>
  
  <pre><code>&lt;option value=""&gt;All Servers&lt;/option&gt;
  &lt;option value="com"&gt;http://smiles.com&lt;/option&gt;
  &lt;option value="in"&gt;http://3smiles.com&lt;/option&gt;
  &lt;option value="com"&gt;http://desk.com&lt;/option&gt;
  &lt;option value="in"&gt;http://france24.com&lt;/option&gt;
  </code></pre>
  
  <p>from the above I have to remove repeated values <code>com</code> and <code>in</code>, so my expected output should be like:</p>
  
  <pre><code>&lt;option value=""&gt;All Servers&lt;/option&gt;
  &lt;option value="com"&gt;http://smiles.com&lt;/option&gt;
  &lt;option value="in"&gt;http://3smiles.com&lt;/option&gt;
  </code></pre>
  
  <p>How to do it using jQuery?</p>