Remove KDE 3

Hi All,

before we can wipe out KDE3 from our ports tree, we have to remove or
update the following consumers:

Ports we should erase:

games/kbilliards

- Last updated 12 years ago
- dead upstream and no replacement

sysutils/knutclient
- dead upstream and new KDE4 version[1] looks also dead because there is
no online/current tarball.
[1]: https://sites.google.com/a/prynych.cz/knutclient/home

games/taxipilot
- Dead beef: http://taxipilot.sourceforge.net/download.php

multimedia/kguitar
- Last news from 2010: KGuitar is not dead. In my opinion, it's dead!

Updates:

x11/kdirstat
- A new port which replace the old Qt3/KDE3-based KDirStat is ready.
https://github.com/shundhammer/qdirstat
See ports@

math/kst
- Update is almost done. See ports@

Ok to remove kbilliards || knutclient || taxipilot || kguitar || $ALL
are welcome. Comments?

Best Regards,

Rafael Sadowksi