I wonder why there is no remove/delete button in the option Rated 4 out of 5 stars

Look at the screen shot image 7 of 7. There are "Add" and "Default Order" button...
But it seems to me that "Edit" and "Remove/Delete" are missing.

This review is for a previous version of the add-on (5.0.3).  This user has 4 previous reviews of this add-on.