message: refactor(aio): remove unused mock method
diff: @@ -6,5 +6,4 @@ export class MockSearchService {
  initWorker = jasmine.createSpy('initWorker');
  loadIndex = jasmine.createSpy('loadIndex');
  search = jasmine.createSpy('search');
  - hideResults = jasmine.createSpy('hideResults');
  }
  