How do you unlock a Facebook contact from your iPhone?

I'm trying to sort all contacts into groups but I am stuck with several because they are taken from the Facebook profile of those people. I thought just noting down the information and making a new contact would work. But I can't delete the stupid contacts. I don't have the Facebook app right now and will not download it until Lent is over as I will not be using it for Lent. How do I stop this insanity?

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