Task/remove unused OnDestroy hook in FAQ page component (#6437)

* Remove unused OnDestroy hook

apps/client/src/app/pages/faq/faq-page.component.ts

@@ -3,19 +3,13 @@ import { hasPermission, permissions } from '@ghostfolio/common/permissions';
 import { publicRoutes } from '@ghostfolio/common/routes/routes';
 import { DataService } from '@ghostfolio/ui/services';
 
-import {
-  CUSTOM_ELEMENTS_SCHEMA,
-  Component,
-  OnDestroy,
-  OnInit
-} from '@angular/core';
+import { CUSTOM_ELEMENTS_SCHEMA, Component, OnInit } from '@angular/core';
 import { MatTabsModule } from '@angular/material/tabs';
 import { RouterModule } from '@angular/router';
 import { IonIcon } from '@ionic/angular/standalone';
 import { addIcons } from 'ionicons';
 import { cloudyOutline, readerOutline, serverOutline } from 'ionicons/icons';
 import { DeviceDetectorService } from 'ngx-device-detector';
-import { Subject } from 'rxjs';
 
 @Component({
   host: { class: 'page has-tabs' },
@@ -25,13 +19,11 @@ import { Subject } from 'rxjs';
   styleUrls: ['./faq-page.scss'],
   templateUrl: './faq-page.html'
 })
-export class GfFaqPageComponent implements OnDestroy, OnInit {
+export class GfFaqPageComponent implements OnInit {
   public deviceType: string;
   public hasPermissionForSubscription: boolean;
   public tabs: TabConfiguration[] = [];
 
-  private unsubscribeSubject = new Subject<void>();
-
   public constructor(
     private dataService: DataService,
     private deviceService: DeviceDetectorService
@@ -68,9 +60,4 @@ export class GfFaqPageComponent implements OnDestroy, OnInit {
   public ngOnInit() {
     this.deviceType = this.deviceService.getDeviceInfo().deviceType;
   }
-
-  public ngOnDestroy() {
-    this.unsubscribeSubject.next();
-    this.unsubscribeSubject.complete();
-  }
 }