message: core-api: remove apiHolder creation check
diff: @@ -306,9 +306,6 @@ export class PrivateAppImpl implements BackstageApp {
  this.verifyPlugins(this.plugins);
  // Initialize APIs once all plugins are available
  - if (this.apiHolder) {
  - throw new Error('Plugin holder was initialized too soon');
  - }
  this.getApiHolder();
  return result;
  