message: Removed child from parent when unmounted
diff: @@ -90,6 +90,7 @@ using namespace facebook::react;
  - (void)unmountChildComponentView:(UIView<RCTComponentViewProtocol> *)childComponentView index:(NSInteger)index
  {
  [_reactSubview removeObserver:self forKeyPath:@"hidden"];
  + [childComponentView removeFromSuperview];
  }
  + (ComponentDescriptorProvider)componentDescriptorProvider
  