title: How do I 'unselect' a selected file?
body: <p>I'm using this to allow the user to select and upload a file:</p>
  
  <pre><code>&lt;input id="fileInput" type="file" ng-file-select="onFileSelect($files)"&gt;
  </code></pre>
  
  <p>This correctly show:</p>
  
  <p><img src="https://i.stack.imgur.com/KxPSt.png" alt="enter image description here"></p>
  
  <p>When user clicks 'Upload', I upload the file.</p>
  
  <p>When the user clicks 'Remove', how do I clear out the file name?</p>