CI: Temporarily disable Panfrost T7xx

Due to more work in the on-site lab, we need to take the T7xx machines
out of the rotation for a couple of hours.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6896>

.gitlab-ci/lava-gitlab-ci.yml

@@ -160,7 +160,7 @@ kernel+rootfs_armhf:
     - .lava-test:arm64
     - .lava-traces-base
 
-panfrost-t720-gles2:arm64:
+.panfrost-t720-gles2:arm64:
   extends:
     - .lava-test:arm64
     - .panfrost-rules
@@ -172,7 +172,7 @@ panfrost-t720-gles2:arm64:
   tags:
     - mesa-ci-aarch64-lava-collabora
 
-panfrost-t760-gles2:armhf:
+.panfrost-t760-gles2:armhf:
   extends:
     - .lava-test:armhf
     - .panfrost-rules