bgpd: Do not display to end user not found afi/safi's

bgpd: Do not display to end user not found afi/safi's

When we are issuing a new command:

router bgp
   bgp default local-preference ..
   -or-
   bgp cluster-id ...
   -or-
   bgp disable-ebgp-connected-route-check

Do not tell them that afi/safi's are not configured.  There is nothing
to do with this information and it will create confusion in the
end user that we are looking for afi/safi's that are never going to
be configed.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>