Clean out unused methods from VoiceEngine and VoEBase.

test/mock_voice_engine.h

Index: test/mock_voice_engine.h
diff --git a/test/mock_voice_engine.h b/test/mock_voice_engine.h
index d644f248610853384b1ff2bd740a05ca81e0f581..8f8fdac8faccf5c9a99d9d6b99cc75bf30b75406 100644
--- a/test/mock_voice_engine.h
+++ b/test/mock_voice_engine.h
@@ -107,17 +107,11 @@ class MockVoiceEngine : public VoiceEngineImpl {
   MOCK_METHOD0(CreateChannel, int());
   MOCK_METHOD1(CreateChannel, int(const ChannelConfig& config));
   MOCK_METHOD1(DeleteChannel, int(int channel));
-  MOCK_METHOD1(StartReceive, int(int channel));
-  MOCK_METHOD1(StopReceive, int(int channel));
   MOCK_METHOD1(StartPlayout, int(int channel));
   MOCK_METHOD1(StopPlayout, int(int channel));
   MOCK_METHOD1(StartSend, int(int channel));
   MOCK_METHOD1(StopSend, int(int channel));
-  MOCK_METHOD1(GetVersion, int(char version[1024]));
-  MOCK_METHOD0(LastError, int());
   MOCK_METHOD0(audio_transport, AudioTransport*());
-  MOCK_METHOD2(AssociateSendChannel,
-               int(int channel, int accociate_send_channel));
 
   // VoECodec
   MOCK_METHOD0(NumOfCodecs, int());