io_uring: clean up io_queue_sqe_arm_apoll

The fix for linked timeout unprep got a bit distored with two rebases,
handle linked timeouts for IO_APOLL_READY as with all other cases, i.e.
queue it at the end of the function.
Signed-off-by: NPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/130b1ea5605bbd81d7b874a95332295799d33b81.1635863773.git.asml.silence@gmail.comSigned-off-by: NJens Axboe <axboe@kernel.dk>

fs/io_uring.c

@@ -6950,10 +6950,6 @@ static void io_queue_sqe_arm_apoll(struct io_kiocb *req)
 
 	switch (io_arm_poll_handler(req)) {
 	case IO_APOLL_READY:
-		if (linked_timeout) {
-			io_queue_linked_timeout(linked_timeout);
-			linked_timeout = NULL;
-		}
 		io_req_task_queue(req);
 		break;
 	case IO_APOLL_ABORTED: