BugID:16917891: fix the build error of stm32f4xx IAR project
#if defined __GNUC__
#include "platform_toolchain.h"
-#elif defined ( __ICCARM__ )
-#include "EWARM/platform_toolchain.h"
-#elif defined ( __CC_ARM ) //KEIL
-#include "RVMDK/platform_toolchain.h"
#endif
//#ifdef CONFIG_PLATFORM_8195A
