Ticket 49403 - tidy ns logging
    
    Bug Description:  nunc-stans logging would swap to a printf
    mode if DEBUG was defined.
    
    Fix Description:  NS is in a good state, so we can use slapd log
    instead.
    
    https://pagure.io/389-ds-base/issue/49403
    
    Author: wibrown
    
    Review by: mreynolds (Thanks!)