Deductions & credits

If you are filing a MN return, you will want to go into your state return (select State in the left hand column after you open your tax return in TurboTax Online), and continue through the screens until you get to the screen titled "Credit for Stillborn Children".  If you previously selected "Yes" you should be brought to a summary screen where you can select to Delete the entry.  See sample screenshot below.  
@heyleu