Remove unnecessary 'use strict' lines and add hygiene check (#5363)

* Remove unnecessary 'use strict' lines and add hygiene check for them

* Move check to under tslint filters to reduce number of filters needed

* Only take first 10 lines of file

src/sql/workbench/api/electron-browser/mainThreadModalDialog.ts

@@ -2,7 +2,7 @@
  *  Copyright (c) Microsoft Corporation. All rights reserved.
  *  Licensed under the Source EULA. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
-'use strict';
+
 import 'vs/css!sql/media/icons/common-icons';
 
 import { WebViewDialog } from 'sql/workbench/parts/webview/electron-browser/webViewDialog';

src/sql/workbench/api/electron-browser/mainThreadTasks.ts

@@ -2,15 +2,13 @@
  *  Copyright (c) Microsoft Corporation. All rights reserved.
  *  Licensed under the Source EULA. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
-'use strict';
+
 import { extHostNamedCustomer } from 'vs/workbench/api/common/extHostCustomers';
 import { TaskRegistry, ITaskHandlerDescription } from 'sql/platform/tasks/common/tasks';
 import { IDisposable } from 'vs/base/common/lifecycle';
 import { IExtHostContext } from 'vs/workbench/api/common/extHost.protocol';
 
 import {
-	ExtHostAccountManagementShape,
-	MainThreadAccountManagementShape,
 	SqlExtHostContext,
 	SqlMainContext,
 	ExtHostTasksShape,

src/sql/workbench/api/electron-browser/sqlExtensionHost.contribution.ts

@@ -2,6 +2,5 @@
  *  Copyright (c) Microsoft Corporation. All rights reserved.
  *  Licensed under the Source EULA. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
-'use strict';
 
 import 'sql/workbench/api/electron-browser/mainThreadModalDialog';