Merge pull request #832 from littlefs-project/remove-sys-types

Remove unnecessary sys/types.h include

lfs_util.h

@@ -23,7 +23,6 @@
 // System includes
 #include <stdint.h>
 #include <stdbool.h>
-#include <sys/types.h>
 #include <string.h>
 #include <inttypes.h>