remove vestigial code

Looks like this was left over from converting Rails to Rack.  I think
it's safe to remove now.

1 files changed, 0 insertions, 39 deletions

diff --git a/actionpack/lib/action_controller/middleware.rb b/actionpack/lib/action_controller/middleware.rb
deleted file mode 100644
index 437fec3dc6..0000000000
--- a/actionpack/lib/action_controller/middleware.rb
+++ /dev/null
@@ -1,39 +0,0 @@
-module ActionController
-  class Middleware < Metal
-    class ActionMiddleware
-      def initialize(controller, app)
-        @controller, @app = controller, app
-      end
-
-      def call(env)
-        request = ActionDispatch::Request.new(env)
-        @controller.build(@app).dispatch(:index, request)
-      end
-    end
-
-    class << self
-      alias build new
-
-      def new(app)
-        ActionMiddleware.new(self, app)
-      end
-    end
-
-    attr_internal :app
-
-    def process(action)
-      response = super
-      self.status, self.headers, self.response_body = response if response.is_a?(Array)
-      response
-    end
-
-    def initialize(app)
-      super()
-      @_app = app
-    end
-
-    def index
-      call(env)
-    end
-  end
-end
\ No newline at end of file