ovl: remove duplicate included header

Remove duplicate included header file linux/posix_acl.h

Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

Author: toblux

fs/overlayfs/inode.c

@@ -8,7 +8,6 @@
 #include <linux/slab.h>
 #include <linux/cred.h>
 #include <linux/xattr.h>
-#include <linux/posix_acl.h>
 #include <linux/ratelimit.h>
 #include <linux/fiemap.h>
 #include <linux/fileattr.h>