diff --git a/src/vs/workbench/api/node/extHost.api.impl.ts b/src/vs/workbench/api/node/extHost.api.impl.ts
index b59d4c636b0..0e8b6c00ce5 100644
--- a/src/vs/workbench/api/node/extHost.api.impl.ts
+++ b/src/vs/workbench/api/node/extHost.api.impl.ts
@@ -112,7 +112,6 @@ export function createApiFactory(
 	const extHostEditors = col.define(ExtHostContext.ExtHostEditors).set<ExtHostEditors>(new ExtHostEditors(threadService, extHostDocumentsAndEditors));
 	const extHostCommands = col.define(ExtHostContext.ExtHostCommands).set<ExtHostCommands>(new ExtHostCommands(threadService, extHostHeapService));
 	const extHostExplorers = col.define(ExtHostContext.ExtHostExplorers).set<ExtHostTreeExplorers>(new ExtHostTreeExplorers(threadService, extHostCommands));
-	// const extHostTree = col.define(ExtHostContext.ExtHostTree).set<ExtHostTree>(new ExtHostTree(threadService, extHostCommands));
 	const extHostConfiguration = col.define(ExtHostContext.ExtHostConfiguration).set<ExtHostConfiguration>(new ExtHostConfiguration(threadService.get(MainContext.MainThreadConfiguration), initData.configuration));
 	const extHostDiagnostics = col.define(ExtHostContext.ExtHostDiagnostics).set<ExtHostDiagnostics>(new ExtHostDiagnostics(threadService));
 	const languageFeatures = col.define(ExtHostContext.ExtHostLanguageFeatures).set<ExtHostLanguageFeatures>(new ExtHostLanguageFeatures(threadService, extHostDocuments, extHostCommands, extHostHeapService, extHostDiagnostics));
diff --git a/src/vs/workbench/api/node/extHost.contribution.ts b/src/vs/workbench/api/node/extHost.contribution.ts
index 934ed7c998c..87aca222da8 100644
--- a/src/vs/workbench/api/node/extHost.contribution.ts
+++ b/src/vs/workbench/api/node/extHost.contribution.ts
@@ -20,7 +20,6 @@ import { MainThreadDocuments } from './mainThreadDocuments';
 import { MainThreadEditors } from './mainThreadEditors';
 import { MainThreadErrors } from './mainThreadErrors';
 import { MainThreadTreeExplorers } from './mainThreadTreeExplorers';
-import { MainThreadTree } from './mainThreadTree';
 import { MainThreadLanguageFeatures } from './mainThreadLanguageFeatures';
 import { MainThreadLanguages } from './mainThreadLanguages';
 import { MainThreadMessageService } from './mainThreadMessageService';
@@ -76,7 +75,6 @@ export class ExtHostContribution implements IWorkbenchContribution {
 		col.define(MainContext.MainThreadEditors).set(this.instantiationService.createInstance(MainThreadEditors, documentsAndEditors));
 		col.define(MainContext.MainThreadErrors).set(create(MainThreadErrors));
 		col.define(MainContext.MainThreadExplorers).set(create(MainThreadTreeExplorers));
-		col.define(MainContext.MainThreadTree).set(create(MainThreadTree));
 		col.define(MainContext.MainThreadLanguageFeatures).set(create(MainThreadLanguageFeatures));
 		col.define(MainContext.MainThreadLanguages).set(create(MainThreadLanguages));
 		col.define(MainContext.MainThreadMessageService).set(create(MainThreadMessageService));
diff --git a/src/vs/workbench/api/node/extHost.protocol.ts b/src/vs/workbench/api/node/extHost.protocol.ts
index 2a324eb9a91..1950f541ddc 100644
--- a/src/vs/workbench/api/node/extHost.protocol.ts
+++ b/src/vs/workbench/api/node/extHost.protocol.ts
@@ -458,7 +458,6 @@ export const MainContext = {
 	MainThreadEditors: createMainId<MainThreadEditorsShape>('MainThreadEditors', MainThreadEditorsShape),
 	MainThreadErrors: createMainId<MainThreadErrorsShape>('MainThreadErrors', MainThreadErrorsShape),
 	MainThreadExplorers: createMainId<MainThreadTreeExplorersShape>('MainThreadExplorers', MainThreadTreeExplorersShape),
-	MainThreadTree: createMainId<MainThreadTreeShape>('MainThreadTree', MainThreadTreeShape),
 	MainThreadLanguageFeatures: createMainId<MainThreadLanguageFeaturesShape>('MainThreadLanguageFeatures', MainThreadLanguageFeaturesShape),
 	MainThreadLanguages: createMainId<MainThreadLanguagesShape>('MainThreadLanguages', MainThreadLanguagesShape),
 	MainThreadMessageService: createMainId<MainThreadMessageServiceShape>('MainThreadMessageService', MainThreadMessageServiceShape),
@@ -491,6 +490,5 @@ export const ExtHostContext = {
 	ExtHostExtensionService: createExtId<ExtHostExtensionServiceShape>('ExtHostExtensionService', ExtHostExtensionServiceShape),
 	ExtHostTerminalService: createExtId<ExtHostTerminalServiceShape>('ExtHostTerminalService', ExtHostTerminalServiceShape),
 	ExtHostSCM: createExtId<ExtHostSCMShape>('ExtHostSCM', ExtHostSCMShape),
-	ExtHostTree: createExtId<ExtHostTreeShape>('ExtHostTree', ExtHostTreeShape),
 	ExtHostTask: createExtId<ExtHostTaskShape>('ExtHostTask', ExtHostTaskShape)
 };
diff --git a/src/vs/workbench/api/node/extHostTree.ts b/src/vs/workbench/api/node/extHostTree.ts
index 014fa2209a4..78f4fdb56a2 100644
--- a/src/vs/workbench/api/node/extHostTree.ts
+++ b/src/vs/workbench/api/node/extHostTree.ts
@@ -2,7 +2,7 @@
  *  Copyright (c) Microsoft Corporation. All rights reserved.
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
-'use strict';
+/*'use strict';
 
 import { TreeNode } from 'vscode';
 import { TPromise } from 'vs/base/common/winjs.base';
@@ -124,4 +124,4 @@ export class ExtHostTree extends ExtHostTreeShape {
 		return TPromise.as(null);
 	}
 
-}
\ No newline at end of file
+}*/
\ No newline at end of file
diff --git a/src/vs/workbench/api/node/mainThreadTree.ts b/src/vs/workbench/api/node/mainThreadTree.ts
index c70a2466aff..db4242e4f41 100644
--- a/src/vs/workbench/api/node/mainThreadTree.ts
+++ b/src/vs/workbench/api/node/mainThreadTree.ts
@@ -2,7 +2,7 @@
  *  Copyright (c) Microsoft Corporation. All rights reserved.
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
-'use strict';
+/*'use strict';
 
 import { TPromise } from 'vs/base/common/winjs.base';
 import Event, { Emitter } from 'vs/base/common/event';
@@ -62,3 +62,4 @@ class TreeExplorerNodeProvider implements InternalTreeExplorerNodeProvider {
 		});
 	}
 }
+*/
\ No newline at end of file