unused functions removed

npm/ng-packs/packages/core/src/lib/interceptors/timezone.interceptor.ts

@@ -10,6 +10,9 @@ export class TimezoneInterceptor implements HttpInterceptor {
   protected readonly timezoneService = inject(TimezoneService);
 
   intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
+    if (!this.timezoneService.isUtcClockEnabled) {
+      return next.handle(req);
+    }
     const timezone = this.timezoneService.timezone;
     if (timezone) {
       req = req.clone({

npm/ng-packs/packages/core/src/lib/services/timezone.service.ts

@@ -37,17 +37,4 @@ export class TimezoneService {
       this.document.cookie = `${this.cookieKey}=${timezone}; path=/`;
     }
   }
-
-  convertUtcToLocal(date: string | Date): Date {
-    return new Date(date + 'Z');
-  }
-
-  convertLocalToUtc(date: Date): string {
-    return date.toISOString();
-  }
-
-  private getCookie(name: string): string | null {
-    const match = this.document.cookie.match(new RegExp('(^| )' + name + '=([^;]+)'));
-    return match ? decodeURIComponent(match[2]) : null;
-  }
 }