Cleanup.

src/debug.cpp

@@ -20,8 +20,6 @@ extern "C" void NSLog(CFStringRef _format, ...);
 #	endif // defined(__OBJC__)
 #elif 0 // BX_PLATFORM_EMSCRIPTEN
 #	include <emscripten.h>
-#else
-#	include <stdio.h>
 #endif // BX_PLATFORM_WINDOWS
 
 namespace bx