Log in to your website and click the Properties menu item.
Click the little box next to the property you want to delete. That should put a checkmark in the box. If you want to delete any others, put a checkmark next to those too.
At the top of the screen you should see a drop-down menu that says “Bulk Actions”. Click that. One of the options is “Delete”. Click Delete.
Click the Apply button.
You’re done! Your properties have been deleted.