chore(style): Remove unused imports

Author: mpalourdio

src/test/components/ng-http-loader.component.spec.ts

@@ -9,7 +9,7 @@
 
 import { HttpClient } from '@angular/common/http';
 import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';
-import { async, ComponentFixture, fakeAsync, TestBed, tick, waitForAsync } from '@angular/core/testing';
+import { ComponentFixture, fakeAsync, TestBed, tick, waitForAsync } from '@angular/core/testing';
 import { By } from '@angular/platform-browser';
 import { forkJoin, Observable, of, Subscription } from 'rxjs';
 import { NgHttpLoaderComponent } from '../../lib/components/ng-http-loader.component';

src/test/services/pending-requests-interceptor.service.spec.ts

@@ -9,7 +9,7 @@
 
 import { HttpClient, HttpErrorResponse } from '@angular/common/http';
 import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';
-import { async, TestBed, waitForAsync } from '@angular/core/testing';
+import { TestBed, waitForAsync } from '@angular/core/testing';
 import { forkJoin, Observable } from 'rxjs';
 import {
     PendingRequestsInterceptor,