removed unnecessary translator object

activerecord/lib/active_record/attribute_methods/read.rb

-require 'active_record/attributes/translator'
-
 module ActiveRecord
   module AttributeMethods
     module Read
@@ -139,20 +137,6 @@ def read_attribute(attr_name)
 
       private
 
-      def attribute_translator
-        Attributes::Translator.new(@attributes, @columns_hash)
-      end
-
-      def cached_cast_attribute(attr_name, method)
-        @attributes_cache[attr_name] ||= cast_attribute(attr_name, method)
-      end
-
-      def cast_attribute(attr_name, method)
-        attribute_translator.cast_attribute(attr_name, method) do
-          missing_attribute(attr_name, caller)
-        end
-      end
-
       def attribute(attribute_name)
         read_attribute(attribute_name)
       end

activerecord/lib/active_record/attributes/translator.rb

-module ActiveRecord
-  module Attributes
-    class Translator # :nodoc:
-      def initialize(attributes, column_types)
-        @attributes   = attributes
-        @column_types = column_types
-      end
-
-      def cast_attribute(attr_name, method)
-        v = @attributes.fetch(attr_name) { yield }
-        v && send(method, attr_name, v)
-      end
-
-      def cast_serialized(attr_name, value)
-        value.unserialized_value
-      end
-
-      def cast_tz_conversion(attr_name, value)
-        value = cast_column(attr_name, value)
-        value.acts_like?(:time) ? value.in_time_zone : value
-      end
-
-      def cast_column(attr_name, value)
-        @column_types[attr_name].type_cast value
-      end
-    end
-  end
-end