gitlab-ci: stop testing RADV with LLVM

ACO is going to be our default compiler soon and it seems useless
to waste CI resources for LLVM.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5543>
1 file changed