Remove enumerize gem

Gemfile

@@ -62,9 +62,6 @@ gem 'rack-cors',    '~> 0.4.0', require: 'rack/cors'
 # based on human-friendly examples
 gem "stamp", '~> 0.6.0'
-# Enumeration fields
-gem 'enumerize', '~> 0.7.0'
-
 # Pagination
 gem "kaminari", "~> 0.16.3"

Gemfile.lock

@@ -173,8 +173,6 @@ GEM
       launchy (~> 2.1)
       mail (~> 2.2)
     encryptor (1.3.0)
-    enumerize (0.7.0)
-      activesupport (>= 3.2)
     equalizer (0.0.11)
     erubis (2.7.0)
     escape_utils (1.1.0)
@@ -828,7 +826,6 @@ DEPENDENCIES
   dropzonejs-rails (~> 0.7.1)
   email_reply_parser (~> 0.5.8)
   email_spec (~> 1.6.0)
-  enumerize (~> 0.7.0)
   factory_girl_rails (~> 4.3.0)
   ffaker (~> 2.0.0)
   flay

app/models/project.rb

@@ -42,9 +42,8 @@ class Project < ActiveRecord::Base
   include Sortable
   include AfterCommitQueue
   include CaseSensitivity
-  
+
   extend Gitlab::ConfigHelper
-  extend Enumerize
   UNKNOWN_IMPORT_URL = 'http://unknown.git'