delete OS_FREERTOS

user/stm32f4xx_it.c

@@ -31,7 +31,7 @@
 #include "stm32f4xx_it.h"
 //#include "usart.h"
 
-#ifdef OS_FREERTOS
+
 /* Scheduler includes */
 #include "FreeRTOS.h"
 #include "task.h"
@@ -44,7 +44,6 @@ extern SemaphoreHandle_t s_xSemaphore;
 #include "stm32f4x7_eth.h"
 /* lwip includes */
 #include "lwip/sys.h"
-#endif
 
 
 #ifdef PRINTF_STDLIB