radv: remove descriptor_indexing fails from expected fails

I think these should be fixed since
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6451. They also
pass for me on polaris and navi.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6586>
7 files changed