Remove dead code (#930)

* Remove last remnants of old analytics code

src/app/app.module.ts

@@ -1,8 +1,6 @@
 import 'core-js';
 
 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';
@@ -256,11 +254,6 @@ registerLocaleData(localeZhTw, 'zh-TW');
         FormsModule,
         AppRoutingModule,
         ServicesModule,
-        Angulartics2Module.forRoot({
-            pageTracking: {
-                clearQueryParams: true,
-            },
-        }),
         ToasterModule.forRoot(),
         InfiniteScrollModule,
         DragDropModule,