Remove Operations overview and its polling endpoint

src/routes/operations/+page.server.ts

@@ -1,3 +1,3 @@
-import { operationsOverview } from '$lib/server/operations-overview.js';
+import { redirect } from '@sveltejs/kit';
 
-export function load() { return { overview: operationsOverview() }; }
+export function load() { redirect(308, '/provisioning'); }