removed unused imports and packages

src/app/dashboard/feedback.component.ts

@@ -1,6 +1,5 @@
 import { Component, OnInit } from '@angular/core';
 import { Validators, FormBuilder, FormGroup } from '@angular/forms';
-import { Http, Response } from '@angular/http';
 import { ApiService } from '../providers/api-service';
 import 'rxjs/add/operator/map';
 
@@ -16,7 +15,6 @@ export class FeedbackComponent implements OnInit {
   feedbackFormStatusError = 'Error received, please try again.';
 
   constructor(
-    private http: Http,
     private formBuilder: FormBuilder,
     private api: ApiService,
   ) {