io_uring: kill io_uring_flush()

This was always a weird work-around or file referencing, and we don't
need it anymore. Get rid of it.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2021-02-28 12:23:27 -07:00
commit 0d30b3e7ee