title: Delete repeated li in a ul list
body: <p>I have a ul list in where I dynamically display several li's from a file. Some of them appear to have the same tag, so I want to remove them an leave only one of them:</p>
  
  <p>I have this:</p>
  
  <pre><code>    &lt;ul id="dealers-ul" data-next="#branches-ul"&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="344410" value="Barcelona Premium"&gt;&lt;label for=" 344410 "&gt; Barcelona Premium&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="343594" value="Barcelona Premium"&gt;&lt;label for=" 343594 "&gt; Barcelona Premium&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="343584" value="Barcelona Premium"&gt;&lt;label for=" 343584 "&gt; Barcelona Premium&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="344444" value="Barcelona Premium"&gt;&lt;label for=" 344444 "&gt; Barcelona Premium&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="343882" value="Ibericar Cadí"&gt;&lt;label for=" 343882 "&gt; Ibericar Cadí&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="343640" value="Ibericar Cadí"&gt;&lt;label for=" 343640 "&gt; Ibericar Cadí&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="343856" value="Motor Munich"&gt;&lt;label for=" 343856 "&gt; Motor Munich&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="343831" value="Motor Munich"&gt;&lt;label for=" 343831 "&gt; Motor Munich&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="344363" value="Motor Munich"&gt;&lt;label for=" 344363 "&gt; Motor Munich&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="343902" value="Motor Munich"&gt;&lt;label for=" 343902 "&gt; Motor Munich&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="344450" value="Nürburgring"&gt;&lt;label for=" 344450 "&gt; Nürburgring&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="344421" value="Pruna Motor"&gt;&lt;label for=" 344421 "&gt; Pruna Motor&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="343628" value="Pruna Motor"&gt;&lt;label for=" 343628 "&gt; Pruna Motor&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="343647" value="Sitjas"&gt;&lt;label for=" 343647 "&gt; Sitjas&lt;/label&gt;&lt;/li&gt;
  &lt;li class="select-option"&gt;&lt;input type="radio" name="choice" id="343892" value="Tallcar"&gt;&lt;label for=" 343892 "&gt; Tallcar&lt;/label&gt;&lt;/li&gt;
  &lt;/ul&gt;
  </code></pre>
  
  <p>And I only want 1 of Barcelona Premium, one of Ibericar Cadí, one of Motor Munich, one of Pruna...</p>