Revert of a commit in 6.6-stable

Hi Greg and crew,

Can you revert:

commit 746e7d285dcb96caa1845fbbb62b14bf4010cdfb Author: Jens Axboe axboe@kernel.dk Date: Wed May 7 08:07:09 2025 -0600

io_uring: ensure deferred completions are posted for multishot

in 6.6-stable? There's some missing dependencies that makes this not work right, I'll bring it back in a series instead.