Remove now-unused `escaped_autolink` helper and rails_autolink gem

Gemfile

@@ -10,9 +10,6 @@ end
 
 gem "rails", "~> 4.1.0"
 
-# Make links from text
-gem 'rails_autolink', '~> 1.1'
-
 # Default values for AR models
 gem "default_value_for", "~> 3.0.0"
 

Gemfile.lock

@@ -448,8 +448,6 @@ GEM
       sprockets-rails (~> 2.0)
     rails-observers (0.1.2)
       activemodel (~> 4.0)
-    rails_autolink (1.1.6)
-      rails (> 3.1)
     railties (4.1.9)
       actionpack (= 4.1.9)
       activesupport (= 4.1.9)
@@ -779,7 +777,6 @@ DEPENDENCIES
   rack-mini-profiler
   rack-oauth2 (~> 1.0.5)
   rails (~> 4.1.0)
-  rails_autolink (~> 1.1)
   raphael-rails (~> 2.1.2)
   rb-fsevent
   rb-inotify

app/helpers/application_helper.rb

@@ -279,10 +279,6 @@ module ApplicationHelper
     html_options
   end
 
-  def escaped_autolink(text)
-    auto_link ERB::Util.html_escape(text), link: :urls
-  end
-
   def promo_host
     'about.gitlab.com'
   end