Don't remove it. Let the dumb ones who can't even follow instructions start from scratch, they knew full well that those items aren't available. Dam how dumb can they be. You did say what items.
Dam people are so stupid . Even when they are handed everything so easily. When told not to craft some stuff. How hard is it to read instruction. How have these people made it in life lol.
I say keep the free craft and let the dumb ones FK their save files. Bunch of idiots.