Fixing tests

backend/package.json

@@ -21,7 +21,6 @@
   },
   "dependencies": {
     "@nestjs/common": "^11.0.1",
-    "@nestjs/config": "^4.0.2",
     "@nestjs/core": "^11.0.1",
     "@nestjs/platform-express": "^11.0.1",
     "@nestjs/typeorm": "^11.0.0",

backend/src/app.controller.spec.ts

@@ -1,6 +1,7 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
+import { ConfigService } from '@nestjs/config';
 
 describe('AppController', () => {
   let appController: AppController;

backend/src/app.service.ts

@@ -1,11 +1,7 @@
 import { Injectable } from '@nestjs/common';
-import { ConfigService } from '@nestjs/config';
 
 @Injectable()
 export class AppService {
-  constructor(
-    private readonly configService: ConfigService
-  ) {}
   getHello(): string {
     return 'Hello World!';
   }