remove unneeded has_ip_address gem

Gemfile

@@ -26,7 +26,6 @@ gem 'fast_xs'
 gem 'fast_xor', git: 'https://github.com/CodeMonkeySteve/fast_xor.git'
 gem 'fastimage'
 gem 'fog', require: false
-gem 'has_ip_address'
 gem 'hiredis'
 
 gem 'email_reply_parser'

Gemfile.lock

@@ -207,7 +207,6 @@ GEM
       guard (>= 1.1)
       spork (>= 0.8.4)
     handlebars-source (1.0.0.rc4)
-    has_ip_address (0.0.1)
     hashie (2.0.4)
     highline (1.6.18)
     hike (1.2.2)
@@ -484,7 +483,6 @@ DEPENDENCIES
   guard-rspec
   guard-spork
   handlebars-source (= 1.0.0.rc4)
-  has_ip_address
   highline
   hiredis
   image_optim

docs/SOFTWARE.md

@@ -27,7 +27,6 @@ The following Ruby Gems are used in Discourse:
 * [omniauth-facebook](https://github.com/mkdynamic/omniauth-facebook)
 * [omniauth-twitter](https://github.com/arunagw/omniauth-twitter)
 * [omniauth-github](https://github.com/intridea/omniauth-github)
-* [has_ip_address](https://rubygems.org/gems/has_ip_address)
 * [vestal_versions](https://rubygems.org/gems/vestal_versions)
 * [uglifier](https://rubygems.org/gems/uglifier)
 * [nokogiri](https://rubygems.org/gems/nokogiri)