Remove Redcarpet markdown engine

This engine was replaced with CommonMarker in 11.4, it was deprecated
since then.

4 files changed, 0 insertions, 54 deletions

diff --git a/lib/banzai/filter/markdown_engines/redcarpet.rb b/lib/banzai/filter/markdown_engines/redcarpet.rb
deleted file mode 100644
index 5b3f75096b1..00000000000
--- a/lib/banzai/filter/markdown_engines/redcarpet.rb
+++ /dev/null
@@ -1,34 +0,0 @@
-# frozen_string_literal: true
-
-# `Redcarpet` markdown engine for GitLab's Banzai markdown filter.
-# This module is used in Banzai::Filter::MarkdownFilter.
-# Used gem is `redcarpet` which is a ruby library for markdown processing.
-# Homepage: https://github.com/vmg/redcarpet
-
-module Banzai
-  module Filter
-    module MarkdownEngines
-      class Redcarpet
-        OPTIONS = {
-          fenced_code_blocks:  true,
-          footnotes:           true,
-          lax_spacing:         true,
-          no_intra_emphasis:   true,
-          space_after_headers: true,
-          strikethrough:       true,
-          superscript:         true,
-          tables:              true
-        }.freeze
-
-        def initialize(context = nil)
-          html_renderer = Banzai::Renderer::Redcarpet::HTML.new
-          @renderer = ::Redcarpet::Markdown.new(html_renderer, OPTIONS)
-        end
-
-        def render(text)
-          @renderer.render(text)
-        end
-      end
-    end
-  end
-end
diff --git a/lib/banzai/filter/spaced_link_filter.rb b/lib/banzai/filter/spaced_link_filter.rb
index 00dbf2d3130..50bf823929c 100644
--- a/lib/banzai/filter/spaced_link_filter.rb
+++ b/lib/banzai/filter/spaced_link_filter.rb
@@ -45,8 +45,6 @@ module Banzai
       ]).freeze
 
       def call
-        return doc if context[:markdown_engine] == :redcarpet
-
         doc.xpath(TEXT_QUERY).each do |node|
           content = node.to_html
 
diff --git a/lib/banzai/filter/syntax_highlight_filter.rb b/lib/banzai/filter/syntax_highlight_filter.rb
index bcf77861f10..9ffde52b5f2 100644
--- a/lib/banzai/filter/syntax_highlight_filter.rb
+++ b/lib/banzai/filter/syntax_highlight_filter.rb
@@ -1,7 +1,6 @@
 # frozen_string_literal: true
 
 require 'rouge/plugins/common_mark'
-require 'rouge/plugins/redcarpet'
 
 # Generated HTML is transformed back to GFM by app/assets/javascripts/behaviors/markdown/nodes/code_block.js
 module Banzai
diff --git a/lib/banzai/renderer/redcarpet/html.rb b/lib/banzai/renderer/redcarpet/html.rb
deleted file mode 100644
index 84931fdc784..00000000000
--- a/lib/banzai/renderer/redcarpet/html.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-# frozen_string_literal: true
-
-module Banzai
-  module Renderer
-    module Redcarpet
-      class HTML < ::Redcarpet::Render::HTML
-        def block_code(code, lang)
-          lang_attr = lang ? %Q{ lang="#{lang}"} : ''
-
-          "\n<pre>" \
-            "<code#{lang_attr}>#{ERB::Util.html_escape(code)}</code>" \
-          "</pre>"
-        end
-      end
-    end
-  end
-end