Remove "experimental" export

With the line in, you get this warning / error message:

Invalid next.config.js options detected: 
 ⚠     Unrecognized key(s) in object: 'appDir' at "experimental"
 ⚠ See more info here: https://nextjs.org/docs/messages/invalid-next-config
 ⚠ App router is available by default now, `experimental.appDir` option can be safely removed.

I removed the line and the app runs ok without it

Author: benjifriedman

next.config.js

@@ -20,6 +20,5 @@ module.exports = {
         hostname: 'source.unsplash.com',
       },
     ],
-  },
-  experimental: { appDir: true },
+  }
 };