Restrict InlineJavaScript for haml_lint to dev and test environment

lib/haml_lint/inline_javascript.rb

-require 'haml_lint/haml_visitor'
-require 'haml_lint/linter'
-require 'haml_lint/linter_registry'
+unless Rails.env.production?
+  require 'haml_lint/haml_visitor'
+  require 'haml_lint/linter'
+  require 'haml_lint/linter_registry'
 
-module HamlLint
+  module HamlLint
     class Linter::InlineJavaScript < Linter
       include LinterRegistry
 
@@ -11,4 +12,5 @@ module HamlLint
         record_lint(node, 'Inline JavaScript is discouraged (https://docs.gitlab.com/ee/development/gotchas.html#do-not-use-inline-javascript-in-views)')
       end
     end
+  end
 end