Removing lesstif

[Thomas Klausner <wiz%netbsd.org@localhost>]

Hi!

The lesstif developers write, on their homepage:

"For a long time motif has been the de-facto standard widgetset in the
professional world. This had one major issue, and that being that the
source of motif was not free. We, the Hungry Programmers implemented a
replacement called lesstif under a free license to provide a way to
use free programs written for the motif widgetset. In 2012, the motif
source has been relicensed to LGPL, making the lesstif source
redundant and obsolete, as its goal has been achieved, a free
motif. As lesstif is practically unmaintained and has serious bugs in
the copy/paste realm, I advice to use the Motif source instead of this
source. "

I plan on removing lesstif and support for it in
mk/motif.buildlink3.mk in a week, barring objections.

Cheers,
 Thomas