Removes unused WaveOut APIs from ADM

webrtc/pc/test/fakeaudiocapturemodule.cc

Index: webrtc/pc/test/fakeaudiocapturemodule.cc
diff --git a/webrtc/pc/test/fakeaudiocapturemodule.cc b/webrtc/pc/test/fakeaudiocapturemodule.cc
index 5812d3900fce8d0fabc432334688da8096f3a448..c1ac489b19cb25b2b9546a914e98945d03436944 100644
--- a/webrtc/pc/test/fakeaudiocapturemodule.cc
+++ b/webrtc/pc/test/fakeaudiocapturemodule.cc
@@ -276,19 +276,6 @@ bool FakeAudioCaptureModule::AGC() const {
   return 0;
 }
 
-int32_t FakeAudioCaptureModule::SetWaveOutVolume(uint16_t /*volume_left*/,
-                                                 uint16_t /*volume_right*/) {
-  RTC_NOTREACHED();
-  return 0;
-}
-
-int32_t FakeAudioCaptureModule::WaveOutVolume(
-    uint16_t* /*volume_left*/,
-    uint16_t* /*volume_right*/) const {
-  RTC_NOTREACHED();
-  return 0;
-}
-
 int32_t FakeAudioCaptureModule::InitSpeaker() {
   // No speaker, just playing from file. Return success.
   return 0;