To delete an IPv4 role-based access control in the list, at the
config:# prompt, type security roleBasedAccessControl ipv4 rule
delete <rule_number>, and press Enter.
To delete a IPv6 role-based access control rule in the list, at the
config:# prompt, type security roleBasedAccessControl ipv6 rule
delete <rule_number>, and press Enter.
<rule_number> is the number of the existing rule you want to
delete.