You can simply delete the forms for this year. However, when you were entering the K-1s in 2019 you should checked the box that the partnership had ended, which would have marked it as "Final". If you had, TT wouldn't be asking about it this year. You don't necessarily need to amend 2019, but should check and see if it changes your taxes: ending a partnership will free up any suspended losses, which could have reduced 2019 taxes.
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**Note also, I'm not a Tax Preparer/CPA. Just a volunteer, seasoned, TurboTax user.
Use any advice accordingly!