remove reference to unused component

src/app/app.component.ts

@@ -47,7 +47,6 @@ import { BusinessDataModule } from 'fis/business.data/business.data.module';
 import { NotificationService } from 'angularlib/notification/notification.service';
 import { env } from 'angularlib/environments/environment';
 import { TranslatePipe } from 'angularlib/labels/translate.pipe';
-import { ChatComponent } from 'angularlib/chat/chat.component';
 import { HttpClient } from '@angular/common/http';
 import { EventI } from 'fis-commons/event/event';
 import { AppService } from 'angularlib/app';
@@ -62,7 +61,6 @@ import { AppService } from 'angularlib/app';
     Angularlib,
     NotificationModule,
     BusinessDataModule,
-    ChatComponent,
   ],
   providers: [DatePipe, FISMessaging, FISPrograms],
   templateUrl: './app.component.html',