Revert "Merge from vscode merge-base (#22769)" (#22779)

This reverts commit 6bd0a17d3c.

extensions/markdown-language-features/server/extension.webpack.config.js

@@ -1,22 +0,0 @@
-/*---------------------------------------------------------------------------------------------
- *  Copyright (c) Microsoft Corporation. All rights reserved.
- *  Licensed under the Source EULA. See License.txt in the project root for license information.
- *--------------------------------------------------------------------------------------------*/
-
-//@ts-check
-
-'use strict';
-
-const withDefaults = require('../../shared.webpack.config');
-const path = require('path');
-
-module.exports = withDefaults({
-	context: path.join(__dirname),
-	entry: {
-		extension: './src/node/main.ts',
-	},
-	output: {
-		filename: 'main.js',
-		path: path.join(__dirname, 'dist', 'node'),
-	}
-});