Remove AudioCodingModuleFactory

These were no longer used anywhere in the code.

BUG=2996
TBR=turaj@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/21379004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@6007 4adac7df-926f-26a2-2b94-8c16560cd09d
2 files changed