ext2: acl: remove unneeded include of linux/capability.h

acl.c has not been (directly) using the interface defined by
linux/capability.h header since commit 3bd858ab1c451725c07a
("Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid
check"). Remove it.

Signed-off-by: Jakub Sitnicki <jsitnicki@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>

fs/ext2/acl.c

@@ -4,7 +4,6 @@
  * Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
  */
 
-#include <linux/capability.h>
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/slab.h>