Remove watchtower stack - redundant with Komodo

Watchtower is no longer needed since Komodo has built-in
container update capabilities (auto_update, poll_for_updates).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

stacks/watchtower.compose.yml

@@ -1,26 +0,0 @@
-services:
-  watchtower:
-    image: containrrr/watchtower:latest
-    container_name: WATCHTOWER
-    hostname: watchtower
-    mem_limit: 512m
-    mem_reservation: 128m
-    cpu_shares: 512
-    security_opt:
-      - no-new-privileges=true
-    read_only: true
-    volumes:
-      - /var/run/docker.sock:/var/run/docker.sock:ro
-    environment:
-      TZ: America/Los_Angeles
-      WATCHTOWER_CLEANUP: true # Remove old images after updating
-      WATCHTOWER_REMOVE_VOLUMES: false # Remove attached volumes after updating
-      DOCKER_API_VERSION: 1.45 # SSH docker version 1.41 for Docker engine version 20.10 - 1.43 for Docker engine version 24 - 1.45 for Docker engine version 26.1
-      WATCHTOWER_INCLUDE_RESTARTING: true # Restart containers after update
-      WATCHTOWER_INCLUDE_STOPPED: false # Update stopped containers
-      WATCHTOWER_SCHEDULE: "0 0 */2 * * *" # Update & Scan containers every 2 hours
-      WATCHTOWER_LABEL_ENABLE: false
-      WATCHTOWER_ROLLING_RESTART: true
-      WATCHTOWER_TIMEOUT: 30s
-      WATCHTOWER_LOG_FORMAT: pretty
-    restart: on-failure:5