title: Boost property tree: Remove a node
body: <p>How would you remove a node from boost xml property tree?</p>
  
  <p>I have a document like this:</p>
  
  <pre><code>&lt;folders&gt;
    &lt;folder&gt;some/folder&lt;/folder&gt;
    &lt;folder&gt;some/folder&lt;/folder&gt;
    &lt;folder&gt;some/folder&lt;/folder&gt;
  &lt;/folders&gt;
  </code></pre>
  
  <p>I know how to itereate and print all folders, but how would i remove one of the items and save the xml back?</p>