Deleting User properties

It’s easy to add user properties but deleting is less than intuitive.

Can we have a ( - ) button added under the User Properties area to remove all custom properties?

Can we have a ((-)) button added along each row to allow a specific property to be removed??

I think I have worked out how to delete my unused properties, by clicking in each row and column and backspacing to remove characters. But, this is painful as you have to remove content from each row and cell. Would be nice to be able to delete ALL and delete by row.