chore(frontend): remove stale dashboard redirect and sample API route

src/app/(frontend)/dashboard/page.tsx

@@ -1,5 +0,0 @@
-import { redirect } from "next/navigation";
-
-export default function DashboardPage() {
-  redirect("/");
-}

src/app/my-route/route.ts

@@ -1,12 +0,0 @@
-import configPromise from "@payload-config";
-import { getPayload } from "payload";
-
-export const GET = async (request: Request) => {
-  const payload = await getPayload({
-    config: configPromise,
-  });
-
-  return Response.json({
-    message: "This is an example of a custom route.",
-  });
-};