"using Microsoft.Xna.Framework.Content;" not necessary?

hey I’m having a problem.
I was moving my visual studio files around and making VS point to them in their different directory’s

but when I created a project today
and tried to use using “Microsoft.Xna.Framework.Content;” line it says “using directive is unnecessary”

also its not just monogame but things like “using System;” too

what would cause this?

It just means you’re not using anything from that namespace, so you don’t need to have the using directive.