Stop exposing placeholder product guides (#9290)

Author: joehan

src/mcp/resources/index.ts

@@ -4,21 +4,17 @@ import { docs } from "./docs";
 import { init_ai } from "./guides/init_ai";
 import { init_auth } from "./guides/init_auth";
 import { init_backend } from "./guides/init_backend";
-import { init_data_connect } from "./guides/init_data_connect";
 import { init_firestore } from "./guides/init_firestore";
 import { init_firestore_rules } from "./guides/init_firestore_rules";
 import { init_hosting } from "./guides/init_hosting";
-import { init_rtdb } from "./guides/init_rtdb";
 import { ServerResource, ServerResourceTemplate } from "../resource";
 import { trackGA4 } from "../../track";
 
 export const resources = [
   init_backend,
   init_ai,
-  init_data_connect,
   init_firestore,
   init_firestore_rules,
-  init_rtdb,
   init_auth,
   init_hosting,
 ];