feat: remove duplicate service (#96)

This was added to test the configuration deployment which is working. We
don't need the additional containers running.

This change:
* Removes the duplicate

f2/config.yaml

@@ -26,13 +26,6 @@ services:
     replicas: 1
     host: opentracker.app
 
-  frontend2:
-    image: alexanderjackson/opentracker-frontend
-    tag: 20230614-1829
-    port: 80
-    replicas: 1
-    host: opentracker.app
-
   backend:
     image: alexanderjackson/opentracker-backend
     tag: 20230830-1730