There have been pkgmoves from net-www/netscape-flash to net-www/adobe-flash and net-www/swfdec-mozilla to www-plugins/swfdec-mozilla
Those garbage packages never worked anyway for me. svn rm is my vote.
killit
%% svn ci -m "Remove net-www. Unsure if they even work and they missed the pkgmove for months now. Cruft at this point, bug 299596" net-www/