io_uring/rw: remove leftover debug statement

commit 5c61795 upstream.

This debug statement was never meant to go into the upstream release,
kill it off before it ends up in a release. It was just part of the
testing for the initial version of the patch.

Fixes: 2ec33a6 ("io_uring/rw: ensure kiocb_end_write() is always called")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

io_uring/io_uring.c

@@ -2708,8 +2708,6 @@ static void io_req_io_end(struct io_kiocb *req)
 {
 	struct io_rw *rw = &req->rw;
 
-	WARN_ON(!in_task());
-
 	if (rw->kiocb.ki_flags & IOCB_WRITE) {
 		kiocb_end_write(req);
 		fsnotify_modify(req->file);