clean up dependencies

stepmania/src/RageInput.cpp

@@ -13,6 +13,7 @@
 #include "RageInput.h"
 #include "RageLog.h"
 #include "RageException.h"
+#include "arch/arch.h"
 #include "arch/InputHandler/InputHandler.h"
 
 RageInput*		INPUTMAN	= NULL;		// globally accessable input device

stepmania/src/RageInput.h

@@ -9,9 +9,8 @@
 */
 
 #include "RageInputDevice.h"
-#include "SDL_utils.h"
-#include "arch/arch.h"
 
+class InputHandler;
 class RageInput
 {
 	vector<InputHandler *> Devices;