def delete_channel_cb(self, viewer, channel):
        chname = channel.name
        del self.name_dict[chname]

        # Unhighlight
        un_hilite_set = set([])
        for path in self._hl_path:
            if path[0] == chname:
                un_hilite_set.add(path)
        self._hl_path -= un_hilite_set

        if not self.gui_up:
            return False
        self.recreate_toc()
Returns:
dataset/ETHPy150Open ejeschke/ginga/ginga/misc/plugins/Contents.py/Contents.delete_channel_cb--crossover with--dataset/ETHPy150Open meraki-analytics/cassiopeia/cassiopeia/type/core/currentgame.py/Game.participants