net/nakenchat: Deprecate and set expiration date to 2024-02-29

Discontinued upstream and never left BETA stage
Return to pool as bsdforge.com has expired

Reference:
https://www.mikekohn.net/software/nakenchat.php

Approved by:	portmgr

net/nakenchat/Makefile

@@ -3,12 +3,15 @@ DISTVERSION=	3.00b1
 CATEGORIES=	net
 MASTER_SITES=	http://downloads.mikekohn.net/nakenchat/
 
-MAINTAINER=	portmaster@BSDforge.com
+MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Small (under 50k) chat server with many features
 WWW=		http://nakenchat.naken.cc/
 
 LICENSE=	GPLv2
 
+DEPRECATED=	Discontinued upstream and never left BETA stage
+EXPIRATION_DATE=2024-02-29
+
 HAS_CONFIGURE=	yes
 USE_RC_SUBR=	nakenchat