Remove uneeded hack

config/application.rb

@@ -31,14 +31,6 @@ module Discourse
     # Application configuration should go into files in config/initializers
     # -- all .rb files in that directory are automatically loaded.
 
-    # HACK!! regression in rubygems / bundler in ruby-head
-    if RUBY_VERSION == "2.1.0"
-      $:.map! do |path|
-        path = File.expand_path(path.sub("../../","../")) if path =~ /fast_xor/ && !File.directory?(File.expand_path(path))
-        path
-      end
-    end
-
     require 'discourse'
     require 'js_locale_helper'