I accidentally entered something in "sale of business property" . How do I remove it?

See if you can find the worksheets and delete them:

Windows instructions

1. Open or continue your return.
2. Switch to Forms Mode by selecting the Forms icon.
3. From the menu, select the form you want to remove.
4. After the form is generated in the right pane, select the Delete Form button.
5. Follow any onscreen instructions to remove the form or forms.

Mac instructions

1. Open or continue your return.
2. Switch to Forms Mode by selecting the Forms icon.
3. From the menu, select the form you want to remove (if you don't see it, select Open Form at the top).
4. From the Forms menu, select Remove [form name].
5. Follow any onscreen instructions to remove the form or forms.