Unregister schema class or associated data_types.

    :param type schemacls: sub class of Schema.
    :param list data_types: data_types to unregister.

def unregistercls(self, schemacls=None, data_types=None):
    """Unregister schema class or associated data_types.

    :param type schemacls: sub class of Schema.
    :param list data_types: data_types to unregister.
    """
    return _REGISTRY.unregistercls(schemacls=schemacls, data_types=data_types)