databases/rubygem-pg0: Remove obsoleted port

Use databases/rubygem-pg instead.

databases/rubygem-pg0/Makefile

@@ -1,27 +0,0 @@
-# Created by: Wen Heping <wenheping@gmail.com>
-
-PORTNAME=	pg
-PORTVERSION=	0.21.0
-PORTREVISION=	2
-CATEGORIES=	databases rubygems
-MASTER_SITES=	RG
-PKGNAMESUFFIX=	0
-
-MAINTAINER=	sunpoet@FreeBSD.org
-COMMENT=	Ruby interface to PostgreSQL library
-
-LICENSE=	BSD2CLAUSE RUBY
-LICENSE_COMB=	dual
-LICENSE_FILE_BSD2CLAUSE=${WRKSRC}/BSDL
-LICENSE_FILE_RUBY=	${WRKSRC}/LICENSE
-
-USES=		gem pgsql
-USE_RUBY=	yes
-
-CONFIGURE_ARGS=	--with-pgsql-include-dir=`${PG_CONFIG} --includedir` \
-		--with-pgsql-lib-dir=`${PG_CONFIG} --libdir`
-PG_CONFIG=	${LOCALBASE}/bin/pg_config
-
-PORTSCOUT=	limit:^0\.
-
-.include <bsd.port.mk>

databases/rubygem-pg0/distinfo

@@ -1,3 +0,0 @@
-TIMESTAMP = 1497359776
-SHA256 (rubygem/pg-0.21.0.gem) = 10b7cc05782236fb840c247a4ecb859f4b77001416774e1646c911c6b1567003
-SIZE (rubygem/pg-0.21.0.gem) = 214016

databases/rubygem-pg0/pkg-descr

@@ -1,5 +0,0 @@
-rubygem-pg provides the module "pg", a Ruby interface to the
-PostgreSQL Relational Database Management System, which
-supersedes the old "postgres" module.
-
-WWW: https://bitbucket.org/ged/ruby-pg/wiki/Home