To remove a property from your property list, highlight the property and either click on the 'Delete' button or right-click on the property and select 'Delete'.

This will move the property out of the main property list and into the Archive, from where it can be retrieved in the future if necessary (See 'Archive').
NOTE THAT THE PROPERTY WILL NOT BE REMOVED FROM THE FINDAPROPERTY.COM SITE UNTIL YOU NEXT PUBLISH UPDATES (See 'Publishing updates').