cleanup

src/vs/workbench/parts/holidays/electron-browser/holidays.contribution.ts

@@ -10,9 +10,7 @@ import { Action } from 'vs/base/common/actions';
 import { TPromise } from 'vs/base/common/winjs.base';
 import { $, append, addClass, removeClass } from 'vs/base/browser/dom';
 import { domEvent, stop } from 'vs/base/browser/event';
-import { filterEvent, mapEvent, once, anyEvent } from 'vs/base/common/event';
-import { StandardKeyboardEvent } from 'vs/base/browser/keyboardEvent';
-import { KeyCode } from 'vs/base/common/keyCodes';
+import { once, anyEvent } from 'vs/base/common/event';
 import { IDisposable, toDisposable, dispose } from 'vs/base/common/lifecycle';
 import { Registry } from 'vs/platform/registry/common/platform';
 import { IWorkbenchActionRegistry, Extensions as ActionExtensions } from 'vs/workbench/common/actions';