Remove Carrier from Settings > Phone > At&T Services

I have weird problem
i brought iPhone 4S from US Factory Unlocked 64GB with iOS 7

i upgraded to iOS 7.0.4 today

Iam using Airtel as my Carrier here in India

i problem i have is i can still see this AT&T Services Settings in my Mobile how to remove it

See below Image





The Problem i am facing is when i want to check my Balance giving *123# it is going to call mode not detected it as othe rmode




How to fix this
Please let me know