Revert "refac backend"

This reverts commit 3f21fb1.

app/server/app.js

@@ -0,0 +1,26 @@
+// const cors = require('cors');
+// const landRoutes = require('./routes/landRoutes');
+
+// //Animationllowed origins
+// const allowedOrigins = ['https://landver01.onrender.com', 'https://landver.vercel.app', 'http://localhost:3000'];
+
+// app.use(
+//   cors({
+//     origin: function (origin, callback) {
+//       // Allow requests with no origin (e.g., mobile apps, curl requests)
+//       if (!origin) return callback(null, true);
+
+//       // Check if the origin is allowed
+//       if (allowedOrigins.indexOf(origin) === -1) {
+//         const msg = 'The CORS policy for this site does not allow access from the specified Origin.';
+//         return callback(new Error(msg), false);
+//       }
+
+//       // If the origin is in the allowed list, accept the request
+//       return callback(null, true);
+//     },
+//     credentials: true,
+//   })
+// );
+
+// app.use('/api/land', landRoutes);