Remove the unused Glance dashboard

Drop the Glance stack, its home. route and DNS record, the glance.*
labels on every container, and the Glance restart in the Warhammer
feed cron script. Update docs to match.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

roles/docker/templates/gitea-compose.yml.j2

@@ -15,11 +15,6 @@ services:
       - GITEA__mailer__PASSWD={{ vault_smtp.password }}
     restart: unless-stopped
     labels:
-      glance.name: Gitea
-      glance.icon: si:gitea
-      glance.url: https://{{ subdomains.git }}/
-      glance.description: Code repo
-      glance.id: gitea
       mag37.dockcheck.update: true
     volumes:
       - gitea:/data
@@ -50,8 +45,6 @@ services:
       - '{{ subdomains.auth }}:{{ docker.hairpin_ip }}'
       - '{{ subdomains.git }}:{{ docker.hairpin_ip }}'
     labels:
-      glance.parent: gitea
-      glance.name: Worker
       mag37.dockcheck.update: true
     volumes:
       - ./runner-config.yaml:/config.yaml