Github Copilot: Useless Remnants

[RongZhou-UCL]

The Github Copilot chat does not work with VSCodium as of 11 Marh 2025.

However, the Github Copilot interface remains tightly integrated in VSCodium. Could it be removed to debloat and minimise cluttering?

[mj-spencer]

To add to this, while these can be hidden, they are still displayed as something that can be added back to the toolbar, even when the Copilot extension is not enabled. As far as I can tell, that is not the case on VSCode, where when Copilot is disabled the secondary sidebar options are not able to be added.