OZG-6986 OZG-7509 cleanup

alfa-client/libs/authentication/src/lib/authentication.service.ts

@@ -22,7 +22,6 @@
  * unter der Lizenz sind dem Lizenztext zu entnehmen.
  */
 import { Environment, ENVIRONMENT_CONFIG } from '@alfa-client/environment-shared';
-import { isNotNull } from '@alfa-client/tech-shared';
 import { Inject, Injectable } from '@angular/core';
 import { AuthConfig, OAuthEvent, OAuthService } from 'angular-oauth2-oidc';
 import { JwksValidationHandler } from 'angular-oauth2-oidc-jwks';
@@ -113,10 +112,6 @@ export class AuthenticationService {
     return getUserNameInitials(this.currentUserResource);
   }
 
-  public isLoggedIn(): boolean {
-    return isNotNull(this.oAuthService.getIdentityClaims());
-  }
-
   public logout(): void {
     this.oAuthService.revokeTokenAndLogout();
   }