Fixed previous VC6 patch.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%402374

include/SDL_config_win32.h

@@ -52,10 +52,6 @@ typedef unsigned int uintptr_t;
 #if ((_MSC_VER <= 1200) && (!defined(LONG_PTR)))
 #define LONG_PTR LONG
 #endif
-#ifndef GWLP_HINSTANCE
-#define GWLP_HINSTANCE GWL_HINSTANCE
-#endif
-#endif
 #else /* !__GNUC__ && !_MSC_VER */
 typedef signed char int8_t;
 typedef unsigned char uint8_t;