CFQ v2 has some spare queue logic that was never enabled.  It has an SMP
deadlock because it attempts to regrab the queue lock in the exit path, so
kill the spare queue stuff completely for 2.6.10.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>