Well, I have no idea as to whether you need NC or not...but to remove it.
1) Go to the MY Info section, and take out NC as the "Other" state you worked in
then
2) Follow the directions here:
How do I delete my state return in TurboTax Online? (intuit.com)
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*