Remove RedCloth and no longer allow bundle-audit to fail

.gitlab-ci.yml

@@ -95,4 +95,3 @@ bundler:audit:
   tags:
     - ruby
     - mysql
-  allow_failure: true

Gemfile

@@ -93,7 +93,6 @@ gem 'html-pipeline', '~> 1.11.0'
 gem 'task_list',     '~> 1.0.2', require: 'task_list/railtie'
 gem 'github-markup', '~> 1.3.1'
 gem 'redcarpet',     '~> 3.3.3'
-gem 'RedCloth',      '~> 4.2.9'
 gem 'rdoc',          '~>3.6'
 gem 'org-ruby',      '~> 0.9.12'
 gem 'creole',        '~> 0.5.0'

Gemfile.lock

@@ -2,7 +2,6 @@ GEM
   remote: https://rubygems.org/
   specs:
     CFPropertyList (2.3.2)
-    RedCloth (4.2.9)
     ace-rails-ap (2.0.1)
     actionmailer (4.2.4)
       actionpack (= 4.2.4)
@@ -826,7 +825,6 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  RedCloth (~> 4.2.9)
   ace-rails-ap (~> 2.0.1)
   activerecord-deprecated_finders (~> 1.0.3)
   activerecord-session_store (~> 0.1.0)