6765 zfs_zaccess_delete() comments do not accurately reflect
delete permissions for ACLs

Reviewed by: Gordon Ross <gwr@nexenta.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Author: Kevin Crowe <kevin.crowe@nexenta.com>

openzfs/openzfs@a40149b935cbbe87bf95e2cc44b3bc99d400513a