Remove data files from data/audio_coding

The files are already part of the resource package.

TBR=andrew@webrtc.org
BUG=issue737

Review URL: https://webrtc-codereview.appspot.com/724011

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2642 4adac7df-926f-26a2-2b94-8c16560cd09d
48 files changed