code: func (lc *LightChain) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription {
  	return lc.scope.Track(new(event.Feed).Subscribe(ch))
  }
docs: // SubscribeRemovedLogsEvent implements the interface of filters.Backend
  // LightChain does not send core.RemovedLogsEvent, so return an empty subscription.