remove platform-specific stuff from StpeMania.cpp

stepmania/src/StepMania.cpp

@@ -69,11 +69,6 @@
 
 #define ZIPS_DIR "Packages/"
 
-#ifdef _WINDOWS
-/* The renderer is responsible for setting this, and updating it when it changes. */
-HWND g_hWndMain = NULL;
-#endif
-
 int g_argc = 0;
 char **g_argv = NULL;
 

stepmania/src/StepMania.h

@@ -23,11 +23,6 @@ CString SaveScreenshot( CString sDir, bool bSaveCompressed, bool bMakeSignature,
 void InsertCoin( int iNum = 1 );
 void InsertCredit();
 
-#if defined(_WINDOWS)
-#include "windows.h"
-extern HWND g_hWndMain;
-#endif
-
 extern int g_argc;
 extern char **g_argv;
 bool GetCommandlineArgument( const CString &option, CString *argument=NULL, int iIndex=0 );