How do I clean up this workspace? Why are these tabs repeating?

I tried uninstalling platformio, but it will just stay there. What can I do about this?

Extensions sidebar → Cogwheel on “PlatformIO” → Uninstall.

grafik


How can I unistall it if its not installed???

grafik

What is “IoT Utility” then? This extension is installed and also based on PlatformIO.