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/gotify-compose.yml.j2

@@ -9,10 +9,6 @@ services:
       - GOTIFY_DEFAULTUSER_PASS={{ vault_gotify.admin_password }}
       - TZ=America/Denver
     labels:
-      glance.name: Gotify
-      glance.icon: si:gotify
-      glance.url: "https://{{ subdomains.gotify }}/"
-      glance.description: Push notification server
       mag37.dockcheck.update: true
     extra_hosts:
       - "{{ subdomains.auth }}:{{ docker.hairpin_ip }}"
@@ -29,10 +25,6 @@ services:
     depends_on:
       - gotify
     labels:
-      glance.name: iGotify Assistant
-      glance.icon: si:apple
-      glance.url: "https://{{ subdomains.gotify_assistant }}/"
-      glance.description: iOS notification assistant
       mag37.dockcheck.update: true
     extra_hosts:
       - "{{ subdomains.auth }}:{{ docker.hairpin_ip }}"