vfs: discard ATTR_ATTR_FLAG

This flag was introduce in 2.1.37pre1 and the only place it was tested
was removed in 2.1.43pre1.  The flag was never set.

Let's discard it properly.

Link: http://lkml.kernel.org/r/877en0hewz.fsf@notabene.neil.brown.name
Signed-off-by: NeilBrown <neilb@suse.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/hostfs/hostfs.h

@@ -19,7 +19,7 @@
 #define HOSTFS_ATTR_ATIME_SET	128
 #define HOSTFS_ATTR_MTIME_SET	256
 
-/* These two are unused by hostfs. */
+/* This one is unused by hostfs. */
 #define HOSTFS_ATTR_FORCE	512	/* Not a change, but a change it */
 #define HOSTFS_ATTR_ATTR_FLAG	1024
 

include/linux/fs.h

@@ -179,7 +179,6 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
 #define ATTR_ATIME_SET	(1 << 7)
 #define ATTR_MTIME_SET	(1 << 8)
 #define ATTR_FORCE	(1 << 9) /* Not a change, but a change it */
-#define ATTR_ATTR_FLAG	(1 << 10)
 #define ATTR_KILL_SUID	(1 << 11)
 #define ATTR_KILL_SGID	(1 << 12)
 #define ATTR_FILE	(1 << 13)