f2fs: remove dead code f2fs_check_acl

The macro f2fs_check_acl is defined but never used since
the initial commit, this patch removes the code that has
been dead for several years.

Signed-off-by: Tiezhu Yang <kernelpatch@126.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/acl.h b/fs/f2fs/acl.h
index b2334d1..2c68518 100644
--- a/fs/f2fs/acl.h
+++ b/fs/f2fs/acl.h
@@ -41,7 +41,6 @@
 extern int f2fs_init_acl(struct inode *, struct inode *, struct page *,
 							struct page *);
 #else
-#define f2fs_check_acl	NULL
 #define f2fs_get_acl	NULL
 #define f2fs_set_acl	NULL