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diff --git a/vendor/rails/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb b/vendor/rails/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb
deleted file mode 100644
index 1794afe..0000000
--- a/vendor/rails/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb
+++ /dev/null
@@ -1,140 +0,0 @@
-# Retain for backward compatibility.  Methods are now included in Class.
-module ClassInheritableAttributes # :nodoc:
-end
-
-# Allows attributes to be shared within an inheritance hierarchy, but where each descendant gets a copy of
-# their parents' attributes, instead of just a pointer to the same. This means that the child can add elements
-# to, for example, an array without those additions being shared with either their parent, siblings, or
-# children, which is unlike the regular class-level attributes that are shared across the entire hierarchy.
-class Class # :nodoc:
-  def class_inheritable_reader(*syms)
-    syms.each do |sym|
-      next if sym.is_a?(Hash)
-      class_eval <<-EOS
-        def self.#{sym}                        # def self.before_add_for_comments
-          read_inheritable_attribute(:#{sym})  #   read_inheritable_attribute(:before_add_for_comments)
-        end                                    # end
-                                               #
-        def #{sym}                             # def before_add_for_comments
-          self.class.#{sym}                    #   self.class.before_add_for_comments
-        end                                    # end
-      EOS
-    end
-  end
-
-  def class_inheritable_writer(*syms)
-    options = syms.extract_options!
-    syms.each do |sym|
-      class_eval <<-EOS
-        def self.#{sym}=(obj)                          # def self.color=(obj)
-          write_inheritable_attribute(:#{sym}, obj)    #   write_inheritable_attribute(:color, obj)
-        end                                            # end
-                                                       #
-        #{"                                            #
-        def #{sym}=(obj)                               # def color=(obj)
-          self.class.#{sym} = obj                      #   self.class.color = obj
-        end                                            # end
-        " unless options[:instance_writer] == false }  # # the writer above is generated unless options[:instance_writer] == false
-      EOS
-    end
-  end
-
-  def class_inheritable_array_writer(*syms)
-    options = syms.extract_options!
-    syms.each do |sym|
-      class_eval <<-EOS
-        def self.#{sym}=(obj)                          # def self.levels=(obj)
-          write_inheritable_array(:#{sym}, obj)        #   write_inheritable_array(:levels, obj)
-        end                                            # end
-                                                       #
-        #{"                                            #
-        def #{sym}=(obj)                               # def levels=(obj)
-          self.class.#{sym} = obj                      #   self.class.levels = obj
-        end                                            # end
-        " unless options[:instance_writer] == false }  # # the writer above is generated unless options[:instance_writer] == false
-      EOS
-    end
-  end
-
-  def class_inheritable_hash_writer(*syms)
-    options = syms.extract_options!
-    syms.each do |sym|
-      class_eval <<-EOS
-        def self.#{sym}=(obj)                          # def self.nicknames=(obj)
-          write_inheritable_hash(:#{sym}, obj)         #   write_inheritable_hash(:nicknames, obj)
-        end                                            # end
-                                                       #
-        #{"                                            #
-        def #{sym}=(obj)                               # def nicknames=(obj)
-          self.class.#{sym} = obj                      #   self.class.nicknames = obj
-        end                                            # end
-        " unless options[:instance_writer] == false }  # # the writer above is generated unless options[:instance_writer] == false
-      EOS
-    end
-  end
-
-  def class_inheritable_accessor(*syms)
-    class_inheritable_reader(*syms)
-    class_inheritable_writer(*syms)
-  end
-
-  def class_inheritable_array(*syms)
-    class_inheritable_reader(*syms)
-    class_inheritable_array_writer(*syms)
-  end
-
-  def class_inheritable_hash(*syms)
-    class_inheritable_reader(*syms)
-    class_inheritable_hash_writer(*syms)
-  end
-
-  def inheritable_attributes
-    @inheritable_attributes ||= EMPTY_INHERITABLE_ATTRIBUTES
-  end
-
-  def write_inheritable_attribute(key, value)
-    if inheritable_attributes.equal?(EMPTY_INHERITABLE_ATTRIBUTES)
-      @inheritable_attributes = {}
-    end
-    inheritable_attributes[key] = value
-  end
-
-  def write_inheritable_array(key, elements)
-    write_inheritable_attribute(key, []) if read_inheritable_attribute(key).nil?
-    write_inheritable_attribute(key, read_inheritable_attribute(key) + elements)
-  end
-
-  def write_inheritable_hash(key, hash)
-    write_inheritable_attribute(key, {}) if read_inheritable_attribute(key).nil?
-    write_inheritable_attribute(key, read_inheritable_attribute(key).merge(hash))
-  end
-
-  def read_inheritable_attribute(key)
-    inheritable_attributes[key]
-  end
-
-  def reset_inheritable_attributes
-    @inheritable_attributes = EMPTY_INHERITABLE_ATTRIBUTES
-  end
-
-  private
-    # Prevent this constant from being created multiple times
-    EMPTY_INHERITABLE_ATTRIBUTES = {}.freeze unless const_defined?(:EMPTY_INHERITABLE_ATTRIBUTES)
-
-    def inherited_with_inheritable_attributes(child)
-      inherited_without_inheritable_attributes(child) if respond_to?(:inherited_without_inheritable_attributes)
-
-      if inheritable_attributes.equal?(EMPTY_INHERITABLE_ATTRIBUTES)
-        new_inheritable_attributes = EMPTY_INHERITABLE_ATTRIBUTES
-      else
-        new_inheritable_attributes = inheritable_attributes.inject({}) do |memo, (key, value)|
-          memo.update(key => value.duplicable? ? value.dup : value)
-        end
-      end
-
-      child.instance_variable_set('@inheritable_attributes', new_inheritable_attributes)
-    end
-
-    alias inherited_without_inheritable_attributes inherited
-    alias inherited inherited_with_inheritable_attributes
-end