title: android studio delete file from vcs
body: <p>I'm looking for to exclude a file form versioning.
  I see the "add" to vcs button on a file but i doesn't find the "untrack" or "ignore" button like in eclipse.I tried to exclude folder .idea/. I tired to edit gitignore manualy and the ignore file button but nothing works.
  Any ideas ? </p>
  
  <p>Thanks 
  thomas</p>