Enter the rental section and you will see a delete button or trash can icon.

If you have trouble, follow these steps:

1. Open or continue your return in TurboTax.
2. Locate Tax Tools 
3. Select Tools
4. See the pop-up window Tool Center
5. Choose Delete a form
6. Select Delete next to the form /schedule/worksheet in the list
7. Follow the instructions

Before you delete it, what happened to the rental property, and exactly when did that happen?  You need to report what happened to it (either this year, or on your previous tax return). 

Absolutely! If you had no property in 2019, I assumed it was disposed of in 2018. If not, you need to enter the disposition information in 2019.

Thanks @AmeliesUncle