io_uring: fix acquire/release annotations

We do conditional locking, so __io_cq_lock() and friends not always
actually grab/release the lock, so kill misleading annotations.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/2a098f9144c24cab622f8bf90b39f44da5d0401e.1687518903.git.asml.silence@gmail.com


Signed-off-by: Jens Axboe <axboe@kernel.dk>