Remove network for uptimekuma

uptime-kuma/docker-compose.yml

@@ -13,10 +13,3 @@ services:
     # Network configuration
     ports:
       - ${PORT}:3001  # Web dashboard port
-    networks:
-      - frontend  # Connects to frontend network
-
-# External network definition
-networks:
-  frontend:
-    external: true  # Uses existing Docker network