Revert "Copy webServer from Typescript to VS Code"

[hediet]

Reverts #165771

This breaks the web build:

[14:05:45] Using gulpfile C:\dev\microsoft\vscode\gulpfile.js
[14:05:45] Starting 'vscode-web-min-ci'...
[14:05:45] Starting clean-web-extensions-build ...
[14:05:45] Finished clean-web-extensions-build after 2 ms
[14:05:45] Starting bundle-web-extensions-build ...
C:\dev\microsoft\vscode\extensions\typescript-language-features
[]
[14:06:02] 'vscode-web-min-ci' errored after 17 s
[14:06:02] TypeError: Cannot read properties of undefined (reading 'path')
    at C:\dev\microsoft\vscode\build\lib\extensions.js:125:90
    at Array.map (<anonymous>)
    at C:\dev\microsoft\vscode\build\lib\extensions.js:107:55

Seems like this file returns an array, but some other scripts expects it not to:

vscode/extensions/typescript-language-features/extension-browser.webpack.config.js

Line 61 in cb43019

}), withBrowserDefaults({