[vs simulator] remove the error prompt for v4.1.0
#include <rtthread.h>
#include "board.h"
-#include <shell.h>
-
-#ifdef RT_USING_LIBC
-#error "simulator does not support RT_USING_LIBC"
-#endif
-
int platform_init(void)
{
#ifdef RT_USING_LWIP
