ext2: remove duplicate 'ext2_get_acl()' define

When commit 4e34e719e457 ("fs: take the ACL checks to common code")
changed the xyz_check_acl() functions into the more natural
xyz_get_acl() interface, we grew two copies of the

  #define ext2_get_acl	NULL

define for the non-acl case.

Remove the extra one.

Reported-by: Marco Stornelli <marco.stornelli@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ext2/acl.h b/fs/ext2/acl.h
index 5c0a6a4..503bfb0 100644
--- a/fs/ext2/acl.h
+++ b/fs/ext2/acl.h
@@ -61,7 +61,6 @@
 #else
 #include <linux/sched.h>
 #define ext2_get_acl	NULL
-#define ext2_get_acl	NULL
 #define ext2_set_acl	NULL
 
 static inline int