Merge branch 'master' into pr/18316

Conflicts:
	activerecord/CHANGELOG.md

1 files changed, 0 insertions, 15 deletions

diff --git a/activerecord/lib/active_record/attribute_methods/serialization.rb b/activerecord/lib/active_record/attribute_methods/serialization.rb
index e5ec5ddca5..d0d8a968c5 100644
--- a/activerecord/lib/active_record/attribute_methods/serialization.rb
+++ b/activerecord/lib/active_record/attribute_methods/serialization.rb
@@ -1,5 +1,3 @@
-require 'active_support/core_ext/string/filters'
-
 module ActiveRecord
   module AttributeMethods
     module Serialization
@@ -51,19 +49,6 @@ module ActiveRecord
             Type::Serialized.new(type, coder)
           end
         end
-
-        def serialized_attributes
-          ActiveSupport::Deprecation.warn(<<-MSG.squish)
-            `serialized_attributes` is deprecated without replacement, and will
-            be removed in Rails 5.0.
-          MSG
-
-          @serialized_attributes ||= Hash[
-            columns.select { |t| t.cast_type.is_a?(Type::Serialized) }.map { |c|
-              [c.name, c.cast_type.coder]
-            }
-          ]
-        end
       end
     end
   end