refactor(express): express set as default backend

back-express/package.json

@@ -1,31 +0,0 @@
-{
-  "name": "express-backend",
-  "version": "1.0.0",
-  "scripts": {
-    "dev": "nodemon src/app.ts",
-    "start": "ts-node src/app.ts",
-    "build": "tsc",
-    "serve": "node dist/app.js"
-  },
-  "author": "Daniel Heras Quesada",
-  "license": "ISC",
-  "description": "",
-  "devDependencies": {
-    "@types/cors": "^2.8.17",
-    "@types/express": "^5.0.0",
-    "@types/node": "^22.7.4",
-    "express": "^4.21.0",
-    "nodemon": "^3.1.7",
-    "ts-node": "^10.9.2",
-    "typescript": "^5.6.2"
-  },
-  "dependencies": {
-    "@types/bcrypt": "^5.0.2",
-    "@types/jsonwebtoken": "^9.0.7",
-    "bcrypt": "^5.1.1",
-    "cors": "^2.8.5",
-    "dotenv": "^16.4.5",
-    "jsonwebtoken": "^9.0.2",
-    "mysql2": "^3.11.3"
-  }
-}