Removing AudioCoding duplicate tests

Reverting to using one version of ACM in ACM tests.

BUG=2996
R=turaj@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/12079004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5924 4adac7df-926f-26a2-2b94-8c16560cd09d
23 files changed