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-rw-r--r--activerecord/lib/active_record/attribute_methods/primary_key.rb1
1 files changed, 0 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/primary_key.rb b/activerecord/lib/active_record/attribute_methods/primary_key.rb
index ca21eae7c1..b9b2acff37 100644
--- a/activerecord/lib/active_record/attribute_methods/primary_key.rb
+++ b/activerecord/lib/active_record/attribute_methods/primary_key.rb
@@ -1,4 +1,3 @@
-# frozen_string_literal: true
require "set"
module ActiveRecord