refactor(webauto-ci): drop dead --skip-tags vcs flag

No role or task in the ansible collection defines a `vcs` tag (never has,
per git history), so the flag was a no-op in the old universe.yaml call
and stayed a no-op after the install_dev_env migration. Drop it so the
remaining `--skip-tags dev_tools` reflects intent.

Signed-off-by: Mete Fatih Cırıt <mfc@autoware.org>

Author: xmfcx

.webauto-ci/main/autoware-setup/run.sh

@@ -11,4 +11,4 @@ ansible-galaxy collection install -f -r "ansible-galaxy-requirements.yaml"
 ansible-playbook autoware.dev_env.install_dev_env \
     "${ansible_args[@]}" \
     -e WORKSPACE_ROOT="$(pwd)" \
-    --skip-tags vcs,dev_tools
+    --skip-tags dev_tools