Deleted useless files such as backend, node_modules and package-lock. Modified readme.

Backend/Models/finance.model.js

@@ -1,21 +0,0 @@
-const mongoose = require("mongoose");
-const financeSchema = new mongoose.Schema(
-  {
-    farm: { type: mongoose.Schema.Types.ObjectId, ref: "Farm", required: true },
-    transactions: [
-      {
-        type: { type: String, enum: ["Expense", "Revenue"], required: true },
-        amount: { type: Number, required: true },
-        description: { type: String },
-        date: { type: Date, default: Date.now },
-      },
-    ],
-    totalExpenses: { type: Number, default: 0 },
-    totalRevenue: { type: Number, default: 0 },
-  },
-  { timestamps: true }
-);
-
-const Finance = mongoose.model("Finance", financeSchema);
-
-module.exports = Finance;