1 files changed, 0 insertions, 27 deletions
diff --git a/actionpack/lib/action_controller/metal/live.rb b/actionpack/lib/action_controller/metal/live.rb
index 667c7f87ca..5de5b02b32 100644
--- a/actionpack/lib/action_controller/metal/live.rb
+++ b/actionpack/lib/action_controller/metal/live.rb
@@ -213,29 +213,6 @@ module ActionController
     end
 
     class Response < ActionDispatch::Response #:nodoc: all
-      class Header < DelegateClass(Hash) # :nodoc:
-        def initialize(response, header)
-          @response = response
-          super(header)
-        end
-
-        def []=(k,v)
-          if @response.committed?
-            raise ActionDispatch::IllegalStateError, 'header already sent'
-          end
-
-          super
-        end
-
-        def merge(other)
-          self.class.new @response, __getobj__.merge(other)
-        end
-
-        def to_hash
-          __getobj__.dup
-        end
-      end
-
       private
 
       def before_committed
@@ -257,10 +234,6 @@ module ActionController
         buf
       end
 
-      def merge_default_headers(original, default)
-        Header.new self, super
-      end
-
       def handle_conditional_get!
         super unless committed?
       end