Removes FATAL() from MicrophoneVolumeIsAvailable() on Android

webrtc/modules/audio_device/android/audio_device_template.h

Index: webrtc/modules/audio_device/android/audio_device_template.h
diff --git a/webrtc/modules/audio_device/android/audio_device_template.h b/webrtc/modules/audio_device/android/audio_device_template.h
index 9f12e181979f8e46250a799b81cd4f1088e68e60..f8307f5105843e32cbd4b89fa14620f047eea79c 100644
--- a/webrtc/modules/audio_device/android/audio_device_template.h
+++ b/webrtc/modules/audio_device/android/audio_device_template.h
@@ -295,7 +295,6 @@ class AudioDeviceTemplate : public AudioDeviceGeneric {
 
   int32_t MicrophoneVolumeIsAvailable(bool& available) override{
     available = false;
-    FATAL() << "Should never be called";
     return -1;
   }