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@5924 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/audio_coding/main/test/TwoWayCommunication.h

@@ -20,11 +20,9 @@
 
 namespace webrtc {
 
-class Config;
-
 class TwoWayCommunication : public ACMTest {
  public:
-  TwoWayCommunication(int testMode, const Config& config);
+  explicit TwoWayCommunication(int testMode);
   ~TwoWayCommunication();
 
   void Perform();