caddy: Remove whoami test container

roles/caddy/templates/docker-compose.yaml.j2

@@ -12,15 +12,6 @@ services:
     labels:
       caddy.auto_https: "off"
 
-  whoami:
-    container_name: whoami
-    image: traefik/whoami
-    networks:
-      - caddy
-    labels:
-      caddy: "http://test.pichi.berlin"
-      caddy.reverse_proxy: "{{ '{{' }}upstreams 80{{ '}}'}}" # has to be done to prevent ansible templating
-
 networks:
   caddy:
     external: true