The program prints those vouchers as a suggestion. If you are certain that you don't need to make estimated tax payments, just disregard those vouchers. See the TurboTax FAQ below for additional explanation.
https://ttlc.intuit.com/replies/3301872
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
