For the "Online" software, it wouldn't/shouldn't be happening, since you have to actually initiate what states you actually want to use every year.
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For the Desktop software
I'm not sure anyone has found a way to stop it entirely....other than installing desktop/download TTX on a brand new computer.
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Others may have messed with various files in the TurboTax installation directory and found a way...but I don't recall having seen a definite solution yet...monitoring this Forum website for many years now.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
