message: fix tsc errors
diff: @@ -21,9 +21,6 @@ import { AuthResponse } from '../types';
  jest.mock('google-auth-library');
  -const setCredentialsMock = jest.fn();
  -const getAccessTokenMock = jest.fn();
  -
  const identityResolutionCallbackMock = async (): Promise<AuthResponse<any>> => {
  return {
  backstageIdentity: {
  