remove unused fDeltaTime

stepmania/src/RageDisplay_OGL.cpp

@@ -486,7 +486,7 @@ CString RageDisplay_OGL::Init( VideoModeParams p, bool bAllowUnacceleratedRender
 
 void RageDisplay_OGL::Update(float fDeltaTime)
 {
-	wind->Update(fDeltaTime);
+	wind->Update();
 
 	if( PREFSMAN->m_bDisableScreenSaver )
 	{

stepmania/src/arch/LowLevelWindow/LowLevelWindow.h

@@ -20,7 +20,7 @@ public:
 	virtual CString TryVideoMode( RageDisplay::VideoModeParams p, bool &bNewDeviceOut ) = 0;
 
 	virtual void SwapBuffers() = 0;
-	virtual void Update(float fDeltaTime) { }
+	virtual void Update() { }
 
 	virtual RageDisplay::VideoModeParams GetVideoModeParams() const = 0;
 };

stepmania/src/arch/LowLevelWindow/LowLevelWindow_SDL.cpp

@@ -178,7 +178,7 @@ void LowLevelWindow_SDL::SwapBuffers()
 	SDL_GL_SwapBuffers();
 }
 
-void LowLevelWindow_SDL::Update(float fDeltaTime)
+void LowLevelWindow_SDL::Update()
 {
 	/* This needs to be called before anything that handles SDL events. */
 	SDL_PumpEvents();

stepmania/src/arch/LowLevelWindow/LowLevelWindow_SDL.h

@@ -11,7 +11,7 @@ public:
 	void *GetProcAddress(CString s);
 	CString TryVideoMode( RageDisplay::VideoModeParams p, bool &bNewDeviceOut );
 	void SwapBuffers();
-	void Update(float fDeltaTime);
+	void Update();
 
 	RageDisplay::VideoModeParams GetVideoModeParams() const { return CurrentParams; }
 

stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.cpp

@@ -216,7 +216,7 @@ void LowLevelWindow_Win32::SwapBuffers()
 	::SwapBuffers( GraphicsWindow::GetHDC() );
 }
 
-void LowLevelWindow_Win32::Update( float fDeltaTime )
+void LowLevelWindow_Win32::Update()
 {
 	GraphicsWindow::Update();
 }

stepmania/src/arch/LowLevelWindow/LowLevelWindow_Win32.h

@@ -11,7 +11,7 @@ public:
 	void *GetProcAddress( CString s );
 	CString TryVideoMode( RageDisplay::VideoModeParams p, bool &bNewDeviceOut );
 	void SwapBuffers();
-	void Update( float fDeltaTime );
+	void Update();
 
 	RageDisplay::VideoModeParams GetVideoModeParams() const;
 };