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diff --git a/vendor/rails/activesupport/lib/active_support/core_ext/module/synchronization.rb b/vendor/rails/activesupport/lib/active_support/core_ext/module/synchronization.rb
deleted file mode 100644
index 069db3f..0000000
--- a/vendor/rails/activesupport/lib/active_support/core_ext/module/synchronization.rb
+++ /dev/null
@@ -1,39 +0,0 @@
-class Module
-  # Synchronize access around a method, delegating synchronization to a
-  # particular mutex. A mutex (either a Mutex, or any object that responds to 
-  # #synchronize and yields to a block) must be provided as a final :with option.
-  # The :with option should be a symbol or string, and can represent a method, 
-  # constant, or instance or class variable.
-  # Example:
-  #   class SharedCache
-  #     @@lock = Mutex.new
-  #     def expire
-  #       ...
-  #     end
-  #     synchronize :expire, :with => :@@lock
-  #   end
-  def synchronize(*methods)
-    options = methods.extract_options!
-    unless options.is_a?(Hash) && with = options[:with]
-      raise ArgumentError, "Synchronization needs a mutex. Supply an options hash with a :with key as the last argument (e.g. synchronize :hello, :with => :@mutex)."
-    end
-
-    methods.each do |method|
-      aliased_method, punctuation = method.to_s.sub(/([?!=])$/, ''), $1
-
-      if method_defined?("#{aliased_method}_without_synchronization#{punctuation}")
-        raise ArgumentError, "#{method} is already synchronized. Double synchronization is not currently supported."
-      end
-
-      module_eval(<<-EOS, __FILE__, __LINE__)
-        def #{aliased_method}_with_synchronization#{punctuation}(*args, &block)     # def expire_with_synchronization(*args, &block)
-          #{with}.synchronize do                                                    #   @@lock.synchronize do
-            #{aliased_method}_without_synchronization#{punctuation}(*args, &block)  #     expire_without_synchronization(*args, &block)
-          end                                                                       #   end
-        end                                                                         # end
-      EOS
-
-      alias_method_chain method, :synchronization
-    end
-  end
-end