Reduce name resolvers to just "SIMBAD Names ESO"

Removed "NED Names ESO" because it always just returns "service
decommissioned".  Removed "SIMBAD Names" and "NED Names" because
they don't appear to be configured anywhere, so having them in the
name resolvers list does nothing.  Removed the CADC resolvers
because they are no longer being supported and are giving
incorrect answers (see fault 20140827.003).