Remove dead code (#1787)

* Remove dead analytics code

src/popup/app.module.ts

@@ -3,8 +3,6 @@ import 'zone.js/dist/zone';
 
 import { DragDropModule } from '@angular/cdk/drag-drop';
 import { ToasterModule } from 'angular2-toaster';
-import { Angulartics2Module } from 'angulartics2';
-import { Angulartics2GoogleAnalytics } from 'angulartics2/ga';
 import { InfiniteScrollModule } from 'ngx-infinite-scroll';
 
 import { AppRoutingModule } from './app-routing.module';
@@ -166,11 +164,6 @@ registerLocaleData(localeZhTw, 'zh-TW');
         FormsModule,
         AppRoutingModule,
         ServicesModule,
-        Angulartics2Module.forRoot({
-            pageTracking: {
-                clearQueryParams: true,
-            },
-        }),
         ToasterModule.forRoot(),
         InfiniteScrollModule,
         DragDropModule,