Remove 389-ds templates now that lib389 is used for installs
    
    The templates created the inf files for calling the 389-ds
    installer setup-ds.pl. Now that lib389 is being used for installation
    these are no longer necessary.
    
    Related: https://pagure.io/freeipa/issue/4491
    
    Signed-off-by: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Christian Heimes <cheimes@redhat.com>