dns/sheerdns: Deprecate and set expiration date to 2024-02-29

Abandonware, upstream dead and last update over 10 years ago
While at it return to pool

Approved by:	portmgr

dns/sheerdns/Makefile

@@ -3,14 +3,16 @@ PORTVERSION=	1.04
 CATEGORIES=	dns
 MASTER_SITES=	https://BSDforge.com/projects/source/dns/sheerdns/
 
-MAINTAINER=	portmaster@BSDforge.com
+MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Lightweight, simple, and fast master DNS server
 WWW=		https://BSDforge.com/projects/dns/sheerdns/
 
 LICENSE=	BSD2CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BROKEN=		Unfetchable
+DEPRECATED=	Abandonware, upstream dead and last update over 10 years ago
+EXPIRATION_DATE=2024-02-29
 
 USES=		gmake tar:xz