Remove deprecated `symbolized_base_class` and `symbolized_sti_name`

activerecord/CHANGELOG.md

+*   Remove deprecated `symbolized_base_class` and `symbolized_sti_name`.
+
+    *Rafael Mendonça França*
+
 *   Remove deprecated `ActiveRecord::Base.disable_implicit_join_references=`.
 
     *Rafael Mendonça França*

activerecord/lib/active_record/inheritance.rb

@@ -79,16 +79,6 @@ def finder_needs_type_condition? #:nodoc:
         :true == (@finder_needs_type_condition ||= descends_from_active_record? ? :false : :true)
       end
 
-      def symbolized_base_class
-        ActiveSupport::Deprecation.warn('`ActiveRecord::Base.symbolized_base_class` is deprecated and will be removed without replacement.')
-        @symbolized_base_class ||= base_class.to_s.to_sym
-      end
-
-      def symbolized_sti_name
-        ActiveSupport::Deprecation.warn('`ActiveRecord::Base.symbolized_sti_name` is deprecated and will be removed without replacement.')
-        @symbolized_sti_name ||= sti_name.present? ? sti_name.to_sym : symbolized_base_class
-      end
-
       # Returns the class descending directly from ActiveRecord::Base, or
       # an abstract class, if any, in the inheritance hierarchy.
       #