Fix superfluous code in edit.rb. Add more descriptive help sentence for CriticMarkup.

bin/gollum

@@ -135,7 +135,7 @@ MSG
     "By default, uses the 'TeX-AMS-MML_HTMLorMML' config with the 'autoload-all' extension.") do
     wiki_options[:mathjax] = true
   end
-  opts.on("--critic-markup", "Enable CriticMarkup support.") do
+  opts.on("--critic-markup", "Enable support for annotations using CriticMarkup.") do
     wiki_options[:critic_markup] = true
   end
   opts.on("--irb", "Launch Gollum in 'console mode', with a predefined API.") do

lib/gollum/views/edit.rb

@@ -60,9 +60,6 @@ module Precious
         true
       end
 
-      def critic_markup
-        @critic_markup
-      end
       
       def allow_uploads
         @allow_uploads