no more need to make Time#to_date and Time#to_datetime public

they are public in actual 1.9 ruby version (tested at least in 1.9.2-p180)

activesupport/lib/active_support/core_ext/string/conversions.rb

 require 'date'
-require 'active_support/core_ext/time/publicize_conversion_methods'
 require 'active_support/core_ext/time/calculations'
 
 class String

activesupport/lib/active_support/core_ext/time/conversions.rb

 require 'active_support/inflector/methods'
-require 'active_support/core_ext/time/publicize_conversion_methods'
 require 'active_support/values/time_zone'
 
 class Time

activesupport/lib/active_support/core_ext/time/publicize_conversion_methods.rb

-require 'date'
-
-class Time
-  # Ruby 1.8-cvs and early 1.9 series define private Time#to_date
-  %w(to_date to_datetime).each do |method|
-    if private_instance_methods.include?(method) || private_instance_methods.include?(method.to_sym)
-      public method
-    end
-  end
-end

activesupport/lib/active_support/time.rb

@@ -13,7 +13,6 @@ module ActiveSupport
 require 'date'
 require 'time'
 
-require 'active_support/core_ext/time/publicize_conversion_methods'
 require 'active_support/core_ext/time/marshal'
 require 'active_support/core_ext/time/acts_like'
 require 'active_support/core_ext/time/calculations'