title: Removing facebook library Android Studio
body: <p>I have followed this instruction to make use of the facebook sdk:
  <a href="https://stackoverflow.com/questions/19961828/using-facebook-sdk-in-android-studio">using facebook sdk in android studio</a>
  but now I don't want to use the sdk anymore. I have removed the entire facebook map from the libraries map. And I removed everything what said "facebook". But still there is a folder in the libraries folder with a file that is called libraries.iml that is coming back when I start Android Studio or while it is active. Could someone explain me how I could get the facebook folder away? Thanks!</p>