Marek Masko shows how to uninstall a particular SQL Server feature:
If you wonder if it is possible to uninstall particular SQL Server feature instead of uninstalling the complete instance, then I have a good news. It is possible and it is very easy.
Let’s assume you want to uninstall PolyBase because you want to install it with a newer version of SQL Server (PolyBase can be installed on only one SQL Server instance per computer).
It brings me mild sadness that the feature Marek chose for this demo was Polybase, but slightly greater joy for the reason.