Remove www/www6to4

The import of this tool in 2004 predates pf.conf(5)'s "af-to" which came
about in 2011.

Since that, there have been no port changes other than dusting things of
in the Makefile.

Upstream is dead, this port fails with "-fno-common" and I have a hard
time seeing how one would use a proxy daemon with their browser to do
address family translation these days.

OK?

Index: devel/quirks/Makefile
===================================================================
RCS file: /cvs/ports/devel/quirks/Makefile,v
retrieving revision 1.1137
diff -u -p -r1.1137 Makefile
--- devel/quirks/Makefile 29 Jan 2021 16:50:42 -0000 1.1137
+++ devel/quirks/Makefile 29 Jan 2021 18:41:26 -0000
@@ -5,7 +5,7 @@ CATEGORIES = devel databases
DISTFILES =

# API.rev
-PKGNAME = quirks-3.525
+PKGNAME = quirks-3.526
PKG_ARCH = *
MAINTAINER = Marc Espie <espie@openbsd.org>

Index: devel/quirks/files/Quirks.pm
===================================================================
RCS file: /cvs/ports/devel/quirks/files/Quirks.pm,v
retrieving revision 1.1153
diff -u -p -r1.1153 Quirks.pm
--- devel/quirks/files/Quirks.pm 29 Jan 2021 16:50:42 -0000 1.1153
+++ devel/quirks/files/Quirks.pm 29 Jan 2021 18:44:08 -0000
@@ -2056,6 +2056,7 @@ my $obsolete_reason = {
'py-qt4' => 3,
'py-qt4-docs' => 3,
'hitch' => 29,
+ 'www6to4' => 30,
};

# reasons for obsolete packages
@@ -2090,6 +2091,7 @@ my @msg = (
"requires GUdev or GUsb", #27
"consider migrating MCollective agents and filters using tools like Bolt and PuppetDB's Puppet Query Language", #28
"unmaintained port that was blocking other changes in ports", #29
+ "ancient software, use pf.conf(5) 'af-to'", #30
);

# ->is_base_system($handle, $state):