A while ago, I downloaded the Docker program, but I did not use it, so I deleted it, but since that day my device started slowing down and this icon appeared. I thought that the reason was Docker because it produced a hyper-v problem that disabled my Virgoal Box. Do you have any previous experience?
I had the same issue and fixed it by the following steps;
Open PowerShell and type;
wsl --unregister docker-desktop-data
wsl --unregister docker-desktop
(This removed the two data icons)
Then to remove the Linux Icon -> Open Settings -> Control Panel -> Programs and Features ->
(Top Left) Turn Windows features on or off...
Untick Windows Subsystem for Linux
This will force a reboot and the icon is then gone