There is dead code still in a few places. For example:
;; Rule 1-1 -> 1 principal, 1 name
;; Maps a principal to the name they own, enforcing a one-to-one relationship between principals and names.
(define-map owner-name principal { name: (buff 48), namespace: (buff 20) })
;; To be removed
;; A non-fungible token (NFT) representing a specific name within a namespace.
(define-non-fungible-token names { name: (buff 48), namespace: (buff 20) })
There is dead code still in a few places. For example: