Remove proposed check for webview views

src/vs/workbench/api/browser/viewsExtensionPoint.ts

@@ -479,11 +479,6 @@ class ViewsExtensionHandler implements IWorkbenchContribution {
 						return null;
 					}
 
-					if (type === ViewType.Webview && !extension.description.enableProposedApi) {
-						collector.error(localize('webviewViewsRequireProposed', "Webview views are proposed api and are only supported when running out of dev or with the following command line switch: --enable-proposed-api"));
-						return null;
-					}
-
 					const viewDescriptor = <ICustomTreeViewDescriptor>{
 						type: type,
 						ctorDescriptor: type === ViewType.Tree ? new SyncDescriptor(TreeViewPane) : new SyncDescriptor(WebviewViewPane),