Simplify setup flow and public API docs

karldns/app.py

@@ -41,10 +41,6 @@ OPENAPI_TAGS = [
         "name": "router",
         "description": "Router-facing registration and IP update endpoints for simple URL clients.",
     },
-    {
-        "name": "admin",
-        "description": "Operator API endpoints protected by the same admin HTTP Basic auth as the web admin console.",
-    },
 ]
 
 CLEANUP_TASK_NAME = "cleanup"