deprecar la referencia de markdown

es una supervivencia de cuando se escribia md a mano

app/controllers/application_controller.rb

@@ -23,8 +23,6 @@ class ApplicationController < ActionController::Base
     redirect_to sites_path
   end
 
-  def markdown; end
-
   private
 
   def uuid?(string)

config/routes.rb

@@ -8,8 +8,6 @@ Rails.application.routes.draw do
 
   root 'application#index'
 
-  get 'markdown', to: 'application#markdown'
-
   constraints(Constraints::ApiSubdomain.new) do
     scope module: 'api' do
       namespace :v1 do