Unassigns a role from group members.
You can only unassign ADMIN roles. Calling this method with group members
with role.value set to MEMBER returns an error.
Notes:
Group ID.
Member IDs. Limited to 100 member IDs. See the Members API for details.
Role to unassign.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.