removes `names` from the set of entry points to track.

        `names` can be a single object or an iterable.

def remove_entry_points(self, names):
        """
        removes `names` from the set of entry points to track.

        `names` can be a single object or an iterable.
        """
        names = util.return_set(names)
        util.remove_from_set(self.entry_point_names,
                             names)