tu: remove workaround for conditional rendering + hw binning

tu: remove workaround for conditional rendering + hw binning

- It hurts users with newer firmware who don't need the workaround
- Kernel now rejects older firmware due to security issues, so this will
  prevent users from using older firmware anyway.
- Only whitelisting 650 enables the workaround by default for any new GPUs

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11790>