Add the possibility to remove a bean in AfterBeanDiscovery event

Right now, the last occasion to "veto" a bean is in ProcessBeanAttributes, but we sometimes need to have all the bean discovered to decide if a given Bean should be present or not.
Sometimes we also need a way to decide lately for some bean properties, so it would be useful to remove the original bean and provide a custom one wrapping it in replacement.
Adding the removeBean(Bean<?> bean) to AfterBeanDiscoveryEvent would be helpful to perform easily these use case.