rulez: drop can-utils from the v2023_repositories list

By default gitlab-rulez defines the default branch based on the
value of current_release_branch which is currently "apertis/v2025pre".

But some packages have been dropped from Apertis in previous releases,
that means they don't have the default branch. Thus we need to teach
gitlab-rulez what is the latest branch to use as default branch.

can-utils was in the v2023_repositories list since its default branch
was apertis/v2023 because it got removed after. Now that it has been
re-added in apertis/v2025pre, gitlab-rulez can rely on the
current_release_branch to define its default branch.

Signed-off-by: Dylan Aïssi <dylan.aissi@collabora.com>

gitlab-scripts/rulez.yaml

@@ -292,7 +292,6 @@ v2023_repositories: &v2023_repositories
   - pkg/bridge-utils
   - pkg/bullet
   - pkg/camlp4
-  - pkg/can-utils
   - pkg/capnproto
   - pkg/cargo-mozilla
   - pkg/cdrkit