How can I remove Capital Gains or Losses (Schedule D). I am doing it online, free edition. it want to charge me for premium

Yes, you can delete Schedule D from your tax return, but if you have a 1099-B, 1099-S, or other sales that have to be reported on Schedule D, you will get audited if you just leave it off your return. 

Here's how to remove Schedule D, Form 8949 and everything on it:

1. Open your return in TurboTax.
2. Select Deductions & Credits.
3. In the left-side menu, select Tax Tools, then Tools.
4. Select Delete a form, from the list in the pop-up window. 
5. Check the list for Schedule D and Form 8949. If you have  these forms in your return, select Delete next to the form.
6. Confirm your Delete, select Continue. 
7. Once the forms are gone, select Continue with my return.