Postponing the Bundler merge.

I faced a big issue about Bundler with ruby core.
  I have no time to resolve it issue before 2.5 final release.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61416 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/bundler/cli/open.rb

@@ -1,26 +0,0 @@
-# frozen_string_literal: true
-
-require "shellwords"
-
-module Bundler
-  class CLI::Open
-    attr_reader :options, :name
-    def initialize(options, name)
-      @options = options
-      @name = name
-    end
-
-    def run
-      editor = [ENV["BUNDLER_EDITOR"], ENV["VISUAL"], ENV["EDITOR"]].find {|e| !e.nil? && !e.empty? }
-      return Bundler.ui.info("To open a bundled gem, set $EDITOR or $BUNDLER_EDITOR") unless editor
-      return unless spec = Bundler::CLI::Common.select_spec(name, :regex_match)
-      path = spec.full_gem_path
-      Dir.chdir(path) do
-        command = Shellwords.split(editor) + [path]
-        Bundler.with_original_env do
-          system(*command)
-        end || Bundler.ui.info("Could not run '#{command.join(" ")}'")
-      end
-    end
-  end
-end