VSCode doesn't clean up old extension versions

[ImRodry]

Issue Type: Bug

Whenever an extension updates, vscode simply downloads it again and creates a new folder in the extensions folder with the new version, leaving the old version on the folder as well which takes up unnecessary space. This should be improved so that the old extension is deleted and replaced with the updated version

VS Code version: Code 1.60.0 (e7d7e9a9348e6a8cc8c03f877d39cb72e5dfb1ff, 2021-09-01T10:41:52.311Z) OS version: Windows_NT x64 10.0.19043 Restricted Mode: No

System Info

|Item|Value| |---|---| |CPUs|Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz (12 x 3192)| |GPU Status|2d_canvas: enabled
gpu_compositing: enabled
multiple_raster_threads: enabled_on
oop_rasterization: enabled
opengl: enabled_on
rasterization: enabled
skia_renderer: enabled_on
video_decode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled| |Load (avg)|undefined| |Memory (System)|19.89GB (4.24GB free)| |Process Argv|D:\\Users\\rodri\\Documents\\GitHub\\hypixel-translators-bot --crash-reporter-id 1aa51578-c79e-468f-b062-c24334e21918| |Screen Reader|no| |VM|0%|

Extensions (19)

Extension|Author (truncated)|Version ---|---|--- better-comments|aar|2.1.0 jsdoc-markdown-highlighting|bie|0.0.1 vscode-eslint|dba|2.1.25 gitlens|eam|11.6.0 EditorConfig|Edi|0.16.4 prettier-vscode|esb|8.1.0 copilot|Git|1.4.2635 vscode-graphql|Gra|0.3.18 discord-vscode|icr|5.7.0 vscode-env|Iro|0.1.0 volar|joh|0.27.17 python|ms-|2021.9.1218897484 jupyter|ms-|2021.8.2041215044 jupyter-keymap|ms-|1.0.0 remote-wsl|ms-|0.58.2 vsliveshare|ms-|1.0.4836 vetur|oct|0.34.1 vscodeintellicode|Vis|1.2.14 minecraft-lang-colorizer|zz5|1.0.0

A/B Experiments

``` vsliv368cf:30146710 vsreu685:30147344 python383cf:30185419 vspyt653:30270858 pythonvspyt602:30300191 vspor879:30202332 vspor708:30202333 vspor363:30204092 pythonvspyt639:30300192 pythontb:30283811 pythonptprofiler:30281270 vshan820:30294714 vstes263cf:30335440 vscorecescf:30358481 pythondataviewer:30285071 pythonvsuse255:30340121 vscod805cf:30301675 pythonvspyt200:30340761 vscextlangct:30333562 binariesv615:30325510 vsccppwtct:30364498 pythonvssor306:30344512 bridge0708:30335490 pygetstartedc2:30360494 bridge0723:30353136 pythonrunftest32:30365366 pythonf5test824:30361777 javagetstartedc:30364665 pythonvspyt187:30365361 pydsgst2:30361792 vscus224:30358039 vssid140cf:30363604 ```

[sandy081]

We do it when VS Code is restarted. Until then we are not sure if any of the opened VS Code windows are running this extension.