Turbotax asks these questions based on the previous answer you give.
If you do not have mortgage and want to delete this form you can follow these steps
1. Sign into your account and select Take me to my return
2. At the right upper corner, in the search box, type in mortgage interest and Enter
3. Select Jump to mortgage interest
4. On screen, Mortgage deduction summary, under the correct mortgage lender select Edit to deduct.