message: interactions: fix delegated event removal
  Re:
diff: @@ -155,12 +155,12 @@ function newInteraction (options, scope) {
  }
  function onDocSignal ({ doc, scope, options }, signalName) {
  - const { delegatedEvents, eventMap } = scope.Interaction;
  + const { eventMap } = scope.Interaction;
  const eventMethod = signalName.indexOf('add') === 0
  ? events.add : events.remove;
  // delegate event listener
  - for (const eventType in delegatedEvents) {
  + for (const eventType in events.delegatedEvents) {
  eventMethod(doc, eventType, events.delegateListener);
  eventMethod(doc, eventType, events.delegateUseCapture, true);
  }
  