Removing a button does not remove assigned OnClick Method

[AnNormalie]

When removing a button in the designer with an assigned on Click event the code gets not removed.

eg this gets not removed when removing the button.

protected async System.Threading.Tasks.Task Button0Click(MouseEventArgs args)
{
    UriHelper.NavigateTo("article");
}

The project and the button got generated by Radzen (not RBS)