Remove deprecated automatic counter caches on `has_many :through`

1 files changed, 0 insertions, 14 deletions

diff --git a/activerecord/lib/active_record/associations/has_many_through_association.rb b/activerecord/lib/active_record/associations/has_many_through_association.rb
index 7a050ca224..0dbd32ae83 100644
--- a/activerecord/lib/active_record/associations/has_many_through_association.rb
+++ b/activerecord/lib/active_record/associations/has_many_through_association.rb
@@ -49,16 +49,7 @@ module ActiveRecord
         end
 
         save_through_record(record)
-        if has_cached_counter? && !through_reflection_updates_counter_cache?
-          ActiveSupport::Deprecation.warn(<<-MSG.squish)
-            Automatic updating of counter caches on through associations has been
-            deprecated, and will be removed in Rails 5. Instead, please set the
-            appropriate `counter_cache` options on the `has_many` and `belongs_to`
-            for your associations to #{through_reflection.name}.
-          MSG
 
-          update_counter_in_database(1)
-        end
         record
       end
 
@@ -211,11 +202,6 @@ module ActiveRecord
         def invertible_for?(record)
           false
         end
-
-        def through_reflection_updates_counter_cache?
-          counter_name = cached_counter_attribute_name
-          inverse_updates_counter_named?(counter_name, through_reflection)
-        end
     end
   end
 end