Get your taxes done using TurboTax

Yes, you can.  If you have not filed, here are the instructions:

Mac Instructions

1. Switch to Forms mode.
2. In the left pane, select the form you want to remove (if you don't see it, click Open Form at the top).
3. From the Forms menu, select Remove [form name].
4. Follow any on-screen instructions to remove the form or forms.