def remove_tracks!(tracks)
      tracks_ids = tracks.map(&:id)
      url = "me/tracks?ids=#{tracks_ids.join ','}"
      User.oauth_delete(@id, url)
      tracks
    end
def remove_tracks!(tracks)
      tracks_ids = tracks.map(&:id)
      url = "me/tracks?ids=#{tracks_ids.join ','}"
      User.oauth_delete(@id, url)
      tracks
    end
Remove tracks from the user’s “Your Music” library.

 @param tracks [Array<Track>] The tracks to remove. Maximum: 50.
 @return [Array<Track>] The tracks removed.

 @example
           tracks = user.saved_tracks

           user.saved_tracks.size #=> 20
           user.remove_tracks!(tracks)
           user.saved_tracks.size #=> 0