fix: remove outline-mcp commented block with undefined Jinja2 vars

Ansible evaluates Jinja2 expressions even in YAML comments, causing
'outline_mcp_image is undefined' error. Removed the entire block since
outline-mcp is no longer relevant (replaced Outline with Docmost).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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

@@ -603,23 +603,3 @@ services:
         max-size: "10m"
         max-file: "3"
 
-  # ── Outline MCP server ───────────────────────────────────────────────────────
-  # NOTE: image must be built & pushed to git.walava.io/jack/outline-mcp:latest first
-  # Disabled until Forgejo registry has the image
-  # outline-mcp:
-  #   image: {{ outline_mcp_image }}
-  #   container_name: outline-mcp
-  #   restart: unless-stopped
-  #   networks:
-  #     - backend
-  #   environment:
-  #     - OUTLINE_URL=https://{{ domain_wiki }}
-  #     - OUTLINE_API_KEY={{ outline_mcp_api_key }}
-  #     - PORT=8765
-  #     - HOST=0.0.0.0
-  #     - LOG_LEVEL=INFO
-  #   logging:
-  #     driver: json-file
-  #     options:
-  #       max-size: "10m"
-  #       max-file: "3"