remove unused

stepmania/src/RageSound.cpp

@@ -895,16 +895,6 @@ float RageSound::GetAbsoluteVolume() const
 	return f;
 }
 
-void RageSound::LockSound()
-{
-	m_Mutex.Lock();
-}
-
-void RageSound::UnlockSound()
-{
-	m_Mutex.Unlock();
-}
-
 float RageSound::GetPlaybackRate() const
 {
 	return float(m_Param.speed_input_samples) / m_Param.speed_output_samples;

stepmania/src/RageSound.h

@@ -134,10 +134,6 @@ public:
 	CString GetLoadedFilePath() const { return m_sFilePath; }
 	bool IsPlaying() const { return m_bPlaying; }
 
-	/* Lock and unlock this sound. */
-	void LockSound();
-	void UnlockSound();
-
 	float GetPlaybackRate() const;
 	RageTimer GetStartTime() const;
 	float GetVolume() const;