title: How to delete an unused string resource for all configurations in Android Studio?
body: <p>I've found an unused string resource, like:</p>
  
  <pre><code>&lt;string name="obsoletestring"&gt;my name is null!&lt;/string&gt;
  </code></pre>
  
  <p>However it is in tens of files, of different languages, in different <code>strings.xml</code> files in <code>values</code>, <code>values-af</code>, <code>values-be</code>, etc folders.</p>
  
  <p>I must have missed something not to know any way to do this in Android Studio other than modifying it by hand one by one. </p>
  
  <p><b>tl;dr</b> How to delete an unused string resource for all configurations?</p>