How do I edit my Tax and Interest Deduction worksheet. I accidentally entered my state and local sales tax rate twice and the dates entered result in more than 365 days.

I need to go back and delete the second line but haven't found a possible way to do that. All I have is a prompt to change the date entered in Line 1b(2) but the dates are accurate. I JUST need to remove the second line. How do I access my Tax and Interest Deduction Worksheet to do so?