Redact Redcar.

This editor is now installable via a Gem, and the Hombrew formula is
quite out of date, so remove.

Formula/redcar.rb

@@ -1,23 +0,0 @@
-require 'formula'
-
-class Redcar < Formula
-  head 'https://github.com/danlucraft/redcar.git'
-  homepage 'https://github.com/danlucraft/redcar'
-
-  depends_on 'jruby'
-  depends_on 'cucumber' => :jruby
-
-  def install
-    puts "You need the RSpec gem installed under JRuby or this will not work."
-
-    system "jruby bin/redcar install"
-    system "jruby -S rake build"
-    libexec.install ['bin', 'lib', 'plugins', 'textmate', 'vendor']
-
-    (bin+'redcar').write <<-EOS
-#!/bin/bash
-jruby -J-XstartOnFirstThread \"#{libexec}/bin/redcar\"
-EOS
-    chmod 0555, (bin+'redcar')
-  end
-end