Revert "radeonsi: enable glthread by default"
This reverts commit d6fabe49.
We have a stream of bug report coming in so lets disable it until they have all been resolved.
Current games with issues include:
Hotline Miami
Hotline Miami 2: Wrong Number
ibb & obb
FINAL FANTASY XI
Braid
List of the bug reports:
https://gitlab.freedesktop.org/mesa/mesa/-/issues/7562
https://gitlab.freedesktop.org/mesa/mesa/-/issues/7943
https://gitlab.freedesktop.org/mesa/mesa/-/issues/8025
Cc: mesa-stable