Cleanup.

include/bx/uint32_t.h

@@ -10,9 +10,6 @@
 
 #if BX_COMPILER_MSVC
 #	if BX_PLATFORM_WINDOWS || BX_PLATFORM_XBOXONE || BX_PLATFORM_WINRT
-#		include <math.h> // math.h is included because VS bitches:
-						 // warning C4985: 'ceil': attributes not present on previous declaration.
-						 // must be included before intrin.h.
 #		include <intrin.h>
 #		pragma intrinsic(_BitScanForward)
 #		pragma intrinsic(_BitScanReverse)