io_uring: remove extra io_commit_cqring()

We don't post events in __io_commit_cqring_flush() anymore but send all
requests to tw, so no need to do io_commit_cqring() there.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/f2481e32375e749be89c42e4804268b608722cef.1655637157.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

io_uring/io_uring.c

@@ -480,7 +480,6 @@ void __io_commit_cqring_flush(struct io_ring_ctx *ctx)
 			io_flush_timeouts(ctx);
 		if (ctx->drain_active)
 			io_queue_deferred(ctx);
-		io_commit_cqring(ctx);
 		spin_unlock(&ctx->completion_lock);
 	}
 	if (ctx->has_evfd)