Remove the a:hlinkClick or a:hlinkHover element, including dropping
        any relationship it might have.

def _remove_hlink(self):
        """
        Remove the a:hlinkClick or a:hlinkHover element, including dropping
        any relationship it might have.
        """
        hlink = self._hlink
        if hlink is None:
            return
        rId = hlink.rId
        if rId:
            self.part.drop_rel(rId)
        self._element.remove(hlink)