caddy-frontend: Drop node.js

It is not needed on the frontend, as websocket frontend can easily expose
node.js backends.
2 jobs for feature/caddy-frontend-drop-node.js in 0 seconds
Status Job ID Name Coverage
  External
failed SLAPOS-SR-TEST-LUKE-feature/caddy-frontend-drop-node.js

03:47:43

failed SLAPOS-SR-TEST-LUKE-feature/caddy-frontend-drop-node.js

04:38:07