Removes unused WaveOut APIs from ADM

webrtc/modules/audio_device/dummy/file_audio_device.cc

Index: webrtc/modules/audio_device/dummy/file_audio_device.cc
diff --git a/webrtc/modules/audio_device/dummy/file_audio_device.cc b/webrtc/modules/audio_device/dummy/file_audio_device.cc
index 14230edbfad758d28746d7d5eef0bac663efbb48..0d9885de7a4dc1a4d262b6cbd83761a6e0a60178 100644
--- a/webrtc/modules/audio_device/dummy/file_audio_device.cc
+++ b/webrtc/modules/audio_device/dummy/file_audio_device.cc
@@ -309,16 +309,6 @@ int32_t FileAudioDevice::SetAGC(bool enable) { return -1; }
 
 bool FileAudioDevice::AGC() const { return false; }
 
-int32_t FileAudioDevice::SetWaveOutVolume(uint16_t volumeLeft,
-                                           uint16_t volumeRight) {
-  return -1;
-}
-
-int32_t FileAudioDevice::WaveOutVolume(uint16_t& volumeLeft,
-                                        uint16_t& volumeRight) const {
-  return -1;
-}
-
 int32_t FileAudioDevice::InitSpeaker() { return -1; }
 
 bool FileAudioDevice::SpeakerIsInitialized() const { return false; }