Remove api_rendering is not needed

actionpack/lib/action_controller.rb

@@ -42,10 +42,6 @@ module ActionController
     autoload :UrlFor
   end
 
-  autoload_under "api" do
-    autoload :ApiRendering
-  end
-
   autoload :TestCase,           'action_controller/test_case'
   autoload :TemplateAssertions, 'action_controller/test_case'
 

actionpack/lib/action_controller/api.rb

@@ -127,7 +127,7 @@ def self.without_modules(*modules)
 
       UrlFor,
       Redirecting,
-      ApiRendering,
+      Rendering,
       Renderers::All,
       ConditionalGet,
       RackDelegation,

actionpack/lib/action_controller/api/api_rendering.rb

-module ActionController
-  module ApiRendering
-    extend ActiveSupport::Concern
-
-    included do
-      include Rendering
-    end
-
-    def render_to_body(options = {})
-      _process_options(options)
-      super
-    end
-  end
-end