Merge pull request #22003 from yui-knk/remove_needless_require_as

Delete needless `require 'active_support/deprecation'`

actionmailer/test/i18n_with_controller_test.rb

 require 'abstract_unit'
 require 'action_view'
 require 'action_controller'
-require 'active_support/deprecation'
 
 class I18nTestMailer < ActionMailer::Base
   configure do |c|

actionpack/lib/action_controller/metal.rb

 require 'active_support/core_ext/array/extract_options'
 require 'action_dispatch/middleware/stack'
-require 'active_support/deprecation'
 require 'action_dispatch/http/request'
 require 'action_dispatch/http/response'
 

actionpack/lib/action_controller/metal/rendering.rb

-require 'active_support/deprecation'
 require 'active_support/core_ext/string/filters'
 
 module ActionController

actionpack/lib/action_dispatch/http/mime_type.rb

 require 'singleton'
 require 'active_support/core_ext/module/attribute_accessors'
 require 'active_support/core_ext/string/starts_ends_with'
-require 'active_support/deprecation'
 
 module Mime
   class Mimes

actionpack/lib/action_dispatch/middleware/reloader.rb

-require 'active_support/deprecation/reporting'
-
 module ActionDispatch
   # ActionDispatch::Reloader provides prepare and cleanup callbacks,
   # intended to assist with code reloading during development.

actionpack/lib/action_dispatch/routing/mapper.rb

@@ -3,7 +3,6 @@
 require 'active_support/core_ext/enumerable'
 require 'active_support/core_ext/array/extract_options'
 require 'active_support/core_ext/regexp'
-require 'active_support/deprecation'
 require 'action_dispatch/routing/redirection'
 require 'action_dispatch/routing/endpoint'
 

actionpack/test/controller/new_base/render_text_test.rb

 require 'abstract_unit'
-require 'active_support/deprecation'
 
 module RenderText
   class MinimalController < ActionController::Metal

actionview/test/actionpack/abstract/render_test.rb

 require 'abstract_unit'
-require 'active_support/deprecation'
 
 module AbstractController
   module Testing

activerecord/lib/active_record/associations/collection_association.rb

-require "active_support/deprecation"
-
 module ActiveRecord
   module Associations
     # = Active Record Association Collection

activerecord/lib/active_record/associations/singular_association.rb

-require "active_support/deprecation"
-
 module ActiveRecord
   module Associations
     class SingularAssociation < Association #:nodoc: