If you indicated that you sold an Investment, you would enter the Date Acquired, Date Sold, Cost Basis and Sales Proceeds to report the sale.
If this doesn't apply to you, in the left-side menu go to Tax Tools > Tools > Delete a Form, to delete the '1099-B Capital Asset Sales Worksheet' from your return. Close TurboTax, clear your Cache and Cookies, then return to where you left off.
Here's the info to Contact TurboTax Support.