Remove unused variable

src/vs/workbench/contrib/comments/browser/commentThreadWidget.ts

@@ -6,7 +6,6 @@
 import * as dom from 'vs/base/browser/dom';
 import { ActionBar } from 'vs/base/browser/ui/actionbar/actionbar';
 import { Action, IAction } from 'vs/base/common/actions';
-import * as arrays from 'vs/base/common/arrays';
 import { Color } from 'vs/base/common/color';
 import { Emitter, Event } from 'vs/base/common/event';
 import { IDisposable, DisposableStore } from 'vs/base/common/lifecycle';