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-rw-r--r--activerecord/lib/active_record/aggregations.rb2
1 files changed, 0 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/aggregations.rb b/activerecord/lib/active_record/aggregations.rb
index 7286837ac7..3250e29b82 100644
--- a/activerecord/lib/active_record/aggregations.rb
+++ b/activerecord/lib/active_record/aggregations.rb
@@ -3,8 +3,6 @@
module ActiveRecord
# See ActiveRecord::Aggregations::ClassMethods for documentation
module Aggregations
- extend ActiveSupport::Concern
-
def initialize_dup(*) # :nodoc:
@aggregation_cache = {}
super