ci/amd: Disable radv-fossils

This job is currently broken due to the lack of git in the Vulkan
container; it should really be pulling the fossils from S3 like the
traces anyway.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34280>

src/amd/ci/gitlab-ci.yml

@@ -322,6 +322,8 @@ radv-fossils:
     - .test-vk
     - .test-radv
     - .fossilize-test
+  rules:
+    - when: never # disabled due to broken job (no git in container)
   script:
     - export LD_PRELOAD=$PWD/install/lib/libamdgpu_noop_drm_shim.so
     # Pitcairn (GFX6)