There's a closed pull request on the void-packages repository

vscode: remove telemetry
https://github.com/void-linux/void-packages/pull/18314

Description:
Adds a sed script from vscodium
https://github.com/VSCodium/vscodium/blob/f805d740bb77135aa36d77bda41318510978abc4/undo_telemetry.sh

AFAICT this is the only change sans rebranding vscodium does, so this
should address issue #10582

Also added `tar` in `hostmakedepends` because the vscode build script uses tar and this is way easier than trying to patch it to use bsdtar.