ci: disable a660 jobs

They are not working right now and it's blocking:
- https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24936 (critical)
- https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24905

Signed-off-by: Karol Herbst <git@karolherbst.de>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24945>

src/freedreno/ci/gitlab-ci.yml

@@ -444,7 +444,7 @@ a618-traces-performance:
     RUNNER_TAG: mesa-ci-x86-64-lava-sm8350-hdk
     VK_DRIVER: freedreno
 
-a660_gl:
+.a660_gl:
   extends:
     - .lava-test-deqp:arm64
     - .collabora-freedreno-rules
@@ -453,7 +453,7 @@ a660_gl:
   variables:
     DEQP_SUITE: freedreno-a660
 
-a660_vk:
+.a660_vk:
   extends:
     - .lava-test-deqp:arm64
     - .collabora-turnip-rules
@@ -463,9 +463,9 @@ a660_vk:
     DEQP_SUITE: freedreno-a660-vk
     DEQP_FRACTION: 2
 
-a660_vk_full:
+.a660_vk_full:
   extends:
-    - a660_vk
+    - .a660_vk
     - .collabora-turnip-manual-rules
   parallel: 3
   timeout: 3h