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-rw-r--r--activerecord/test/cases/schema_dumper_test.rb1
1 files changed, 0 insertions, 1 deletions
diff --git a/activerecord/test/cases/schema_dumper_test.rb b/activerecord/test/cases/schema_dumper_test.rb
index 99e7ef6c03..71ff727b7f 100644
--- a/activerecord/test/cases/schema_dumper_test.rb
+++ b/activerecord/test/cases/schema_dumper_test.rb
@@ -1,5 +1,4 @@
require "cases/helper"
-require 'stringio'
class SchemaDumperTest < ActiveRecord::TestCase