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-rw-r--r--activerecord/lib/active_record/attribute_methods/dirty.rb1
1 files changed, 0 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/dirty.rb b/activerecord/lib/active_record/attribute_methods/dirty.rb
index dfc6a7714a..60e5b0e2bb 100644
--- a/activerecord/lib/active_record/attribute_methods/dirty.rb
+++ b/activerecord/lib/active_record/attribute_methods/dirty.rb
@@ -1,4 +1,3 @@
-require 'active_support/core_ext/class/attribute'
require 'active_support/core_ext/module/attribute_accessors'
module ActiveRecord