Get your taxes done using TurboTax

Did you select "personal items" as what you were selling?

As you continue through the interview you will see a screen that says Select any less common adjustments that apply on the download version.  Select "Any loss from this sale is not deductible for reasons other than disallowed sale"

If you are using the online version, you can select that you sold Personal Items. When you do this, it removes the loss.