Delete the given reftrack node

        :param refobj: the node to delete
        :type refobj: str
        :returns: None
        :rtype: None
        :raises: None

def delete_refobj(self, refobj):
        """Delete the given reftrack node

        :param refobj: the node to delete
        :type refobj: str
        :returns: None
        :rtype: None
        :raises: None
        """
        with common.locknode(refobj, lock=False):
            cmds.delete(refobj)