remove a few go libraries leaf ports

These are a few ports that have no reverse deps (outside themselves)
and that don't provide any binary, only the go code, and thus quite
useless. nowadays a go port would just use the modules if depends on
these.

- devel/go-sys
- security/go-crypto
- security/go-ed25519
- security/go-siphash

textproc/go-text could go as well but since it provides bin/colcmp
maybe someone uses it? (not that it couldn't be replaced with a
proper -updated- port...)

(+cc relevant maintainers)

cvs rm excluded for brevity.

Index: Makefile
===================================================================
RCS file: /cvs/ports/devel/quirks/Makefile,v
retrieving revision 1.1483
diff -u -p -r1.1483 Makefile
--- Makefile 2 Feb 2023 07:57:42 -0000 1.1483
+++ Makefile 2 Feb 2023 08:28:57 -0000
@@ -3,7 +3,7 @@ CATEGORIES = devel databases
DISTFILES =

# API.rev
-PKGNAME = quirks-6.99
+PKGNAME = quirks-6.100
PKG_ARCH = *
MAINTAINER = Marc Espie <espie@openbsd.org>

Index: files/Quirks.pm
===================================================================
RCS file: /cvs/ports/devel/quirks/files/Quirks.pm,v
retrieving revision 1.1494
diff -u -p -r1.1494 Quirks.pm
--- files/Quirks.pm 2 Feb 2023 07:57:42 -0000 1.1494
+++ files/Quirks.pm 2 Feb 2023 08:28:58 -0000
@@ -1782,6 +1782,10 @@ setup_obsolete_reason(
3 => 'gotweb',
6 => 'go-net',
6 => 'go-goptlib',
+ 6 => 'go-sys',
+ 6 => 'go-crypto',
+ 6 => 'go-ed25519',
+ 6 => 'go-siphash',
);

# though it's not yet used, these should be pkgnames, so that eventually