net-p2p/*: revert unjust deprecation of three useful ports

These are written in traditional languages and do not require
complex, resource-consuming bootstrap or runtime, contrary to
the suggested alternatives.

net-p2p/btcheck/Makefile

@@ -10,11 +10,7 @@ WWW=		https://sourceforge.net/projects/btcheck/
 
 LICENSE=	GPLv3
 
-DEPRECATED=	Abandoned upstream and missing multiple features that modern torrent files/clients utilize, consider using net-p2p/intermodal
-EXPIRATION_DATE=2025-04-30
-
 GNU_CONFIGURE=	yes
-GNU_CONFIGURE_MANPREFIX=	${PREFIX}/share
 
 CONFLICTS_INSTALL=	libbt # bin/btcheck
 

net-p2p/mktorrent/Makefile

@@ -4,16 +4,13 @@ DISTVERSIONPREFIX=	v
 PORTREVISION=	1
 CATEGORIES=	net-p2p
 
-MAINTAINER=	ports@FreeBSD.org
+MAINTAINER=	danfe@FreeBSD.org
 COMMENT=	Command-line utility for creating BitTorrent metainfo files
 WWW=		https://github.com/Rudde/mktorrent
 
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-DEPRECATED=	Abandonware, new upstream which also seems to have abandoned the project. Consider using net-p2p/mkbrr
-EXPIRATION_DATE=2025-03-31
-
 USE_GITHUB=	yes
 GH_ACCOUNT=	Rudde
 

net-p2p/mldonkey/Makefile

@@ -10,9 +10,6 @@ WWW=		https://mldonkey.sourceforge.net/
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/Copying.txt
 
-DEPRECATED=	Outdated and unsupported upstream
-EXPIRATION_DATE=2025-04-30
-
 CONFLICTS=	mldonkey{-{core,gui},}-devel
 
 BUILD_DEPENDS=	${LOCALBASE}/lib/ocaml/nums.cma:math/ocaml-num