refactor: completely remove payload cms and convert to static/mdx approaches

next.config.mjs

@@ -1,4 +1,3 @@
-import { withPayload } from "@payloadcms/next/withPayload";
 import withMintelConfig from "@mintel/next-config";
 
 /** @type {import('next').NextConfig} */
@@ -34,4 +33,4 @@ const nextConfig = {
     },
 };
 
-export default withPayload(withMintelConfig(nextConfig));
+export default withMintelConfig(nextConfig);