When you manage a windows server in core mode you can’t just open Control Panel -> Programs and Features to see whether or not particular application is installed.
Here’s the command for it:
wmic /node:server product where "Name LIKE '%name%'" get name,version
To uninstall it:
wmic /node:server product where "Name LIKE '%name%'" uninstall
Nkre: the later might not always work, probably depends on how its uninstaller was written.