Remove specs + eslind on front

Frontend/src/app/services/data.service.ts

@@ -1,12 +1,9 @@
 import { Injectable } from '@angular/core';
 import { BehaviorSubject } from 'rxjs';
-import { User } from '../models/user.model';
 
 @Injectable({
   providedIn: 'root'
 })
 export class DataService {
   public showLoader: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);
-  
-  constructor() { }
 }