Removes deprecated ADM APIs.

Final stage since these APIs are no longer used in Chrome.

Bug: webrtc:7306
Change-Id: Ia116671bc888daa75c4105ad1ebeb21833f5d090
Reviewed-on: https://webrtc-review.googlesource.com/25220
Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org>
Commit-Queue: Henrik Andreassson <henrika@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20836}
diff --git a/modules/audio_device/include/audio_device.h b/modules/audio_device/include/audio_device.h
index c096a83..3a02589 100644
--- a/modules/audio_device/include/audio_device.h
+++ b/modules/audio_device/include/audio_device.h
@@ -142,31 +142,10 @@
   virtual int32_t StereoRecordingIsAvailable(bool* available) const = 0;
   virtual int32_t SetStereoRecording(bool enable) = 0;
   virtual int32_t StereoRecording(bool* enabled) const = 0;
-  // TODO(bugs.webrtc.org/7306): deprecated.
-  virtual int32_t SetRecordingChannel(const ChannelType channel) { return -1; }
-  virtual int32_t RecordingChannel(ChannelType* channel) const { return -1; }
 
   // Playout delay
   virtual int32_t PlayoutDelay(uint16_t* delayMS) const = 0;
 
-  // TODO(bugs.webrtc.org/7306): deprecated (to be removed).
-  virtual int32_t SetRecordingSampleRate(const uint32_t samplesPerSec) {
-    return -1;
-  }
-  virtual int32_t RecordingSampleRate(uint32_t* samplesPerSec) const {
-    return -1;
-  }
-  virtual int32_t SetPlayoutSampleRate(const uint32_t samplesPerSec) {
-    return -1;
-  }
-  virtual int32_t PlayoutSampleRate(uint32_t* samplesPerSec) const {
-    return -1;
-  }
-
-  // TODO(bugs.webrtc.org/7306): deprecated (to be removed).
-  virtual int32_t SetLoudspeakerStatus(bool enable) { return -1; }
-  virtual int32_t GetLoudspeakerStatus(bool* enabled) const { return -1; }
-
   // Only supported on Android.
   virtual bool BuiltInAECIsAvailable() const = 0;
   virtual bool BuiltInAGCIsAvailable() const = 0;