Remove shtool package

packages/shtool.rb

-require 'package'
-
-class Shtool < Package
-  description 'GNU shtool is a compilation of small but very stable and portable shell scripts into a single shell tool.'
-  homepage 'http://savannah.gnu.org/projects/shtool'
-  version '2.0.8'
-  source_url 'http://ftp.gnu.org/gnu/shtool/shtool-2.0.8.tar.gz'
-  source_sha256 '1298a549416d12af239e9f4e787e6e6509210afb49d5cf28eb6ec4015046ae19'
-
-  def self.build
-    system './configure'
-    system 'make'
-  end
-
-  def self.install
-    system "mkdir -p #{CREW_DEST_DIR}/usr/local/bin"
-    system "mkdir -p #{CREW_DEST_DIR}/usr/local/man/man1"
-    system "cp shtool #{CREW_DEST_DIR}/usr/local/bin"
-    system "cp *.1 #{CREW_DEST_DIR}/usr/local/man/man1"
-  end
-end