crocus/ci: disable jobs on anholt farm

That farm is not coming back any time soon, so let's just disable the
jobs to avoid having to keep them working while refactoring; they'll
have to be mostly re-written if/when they're brought back anyway.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36024>

src/gallium/drivers/crocus/ci/gitlab-ci.yml

@@ -1,7 +1,7 @@
 include:
   - local: 'src/gallium/drivers/crocus/ci/gitlab-ci-inc.yml'
 
-crocus-hsw:
+.crocus-hsw:
   extends:
     - .anholt-hsw-test
     - .test-gl
@@ -13,7 +13,7 @@ crocus-hsw:
     DEQP_SUITE: crocus-hsw
     PIGLIT_PLATFORM: gbm
 
-crocus-hsw-traces:
+.crocus-hsw-traces:
   extends:
     - .anholt-hsw-test
     - .test-gl