Removes unused WaveOut APIs from ADM

webrtc/modules/audio_device/mac/audio_device_mac.cc

Index: webrtc/modules/audio_device/mac/audio_device_mac.cc
diff --git a/webrtc/modules/audio_device/mac/audio_device_mac.cc b/webrtc/modules/audio_device/mac/audio_device_mac.cc
index 59906a87458dfb8f338d946e9447a9bbdfd144ca..2b48930fbc6a69771b2e3a6e0a83f1a211b6e664 100644
--- a/webrtc/modules/audio_device/mac/audio_device_mac.cc
+++ b/webrtc/modules/audio_device/mac/audio_device_mac.cc
@@ -548,18 +548,6 @@ int32_t AudioDeviceMac::SpeakerVolume(uint32_t& volume) const {
   return 0;
 }
 
-int32_t AudioDeviceMac::SetWaveOutVolume(uint16_t volumeLeft,
-                                         uint16_t volumeRight) {
-  LOG(LS_WARNING) << "API call not supported on this platform";
-  return -1;
-}
-
-int32_t AudioDeviceMac::WaveOutVolume(uint16_t& /*volumeLeft*/,
-                                      uint16_t& /*volumeRight*/) const {
-  LOG(LS_WARNING) << "API call not supported on this platform";
-  return -1;
-}
-
 int32_t AudioDeviceMac::MaxSpeakerVolume(uint32_t& maxVolume) const {
   uint32_t maxVol(0);