Unused function.

stepmania/src/RageSoundManager.cpp

@@ -379,8 +379,6 @@ void RageSoundManager::SetPrefs(float MixVol)
 	g_SoundManMutex.Lock(); /* lock for access to MixVolume */
 	MixVolume = MixVol;
 	g_SoundManMutex.Unlock(); /* finished with MixVolume */
-
-	driver->VolumeChanged();
 }
 
 /* Standalone helpers: */

stepmania/src/arch/Sound/RageSoundDriver.h

@@ -32,10 +32,6 @@ public:
 	 * hearing it.  (This isn't necessarily the same as the buffer latency.) */
 	virtual float GetPlayLatency() const { return 0.0f; }
 
-	/* This is called if the volume changed; call SOUNDMAN->GetMixVolume() to
-	 * get it. */
-	virtual void VolumeChanged() { }
-
 	virtual int GetSampleRate( int rate ) const { return 44100; }
 
 	virtual ~RageSoundDriver() { }