[ML] Remove DragSelect event handlers and selectors on the swim lane …

…unmount (elastic#72250)

* [ML] remove selector element on unmount

* [ML] stop handler on mount

* [ML] remove throttling

x-pack/plugins/ml/public/application/explorer/explorer_swimlane.tsx

@@ -204,18 +204,20 @@ export class ExplorerSwimlane extends React.Component<ExplorerSwimlaneProps> {
  });
 
  this.renderSwimlane();
+
+ this.dragSelect.stop();
  }
 
  componentDidUpdate() {
  this.renderSwimlane();
  }
 
  componentWillUnmount() {
- if (this.dragSelectSubscriber !== null) {
-  this.dragSelectSubscriber.unsubscribe();
- }
- const element = d3.select(this.rootNode.current!);
- element.html('');
+ this.dragSelectSubscriber!.unsubscribe();
+ // Remove selector element from DOM
+ this.dragSelect.selector.remove();
+ // removes all mousedown event handlers
+ this.dragSelect.stop(true);
  }
 
  selectCell(cellsToSelect: any[], { laneLabels, bucketScore, times }: SelectedData) {