Clean up #includes

mv.c

@@ -1,9 +1,8 @@
 /* See LICENSE file for copyright and license details. */
+#include <sys/stat.h>
+
 #include <errno.h>
 #include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <unistd.h>
 
 #include "fs.h"
 #include "util.h"