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-rw-r--r--test/-ext-/thread_fd/test_thread_fd_close.rb1
1 files changed, 0 insertions, 1 deletions
diff --git a/test/-ext-/thread_fd/test_thread_fd_close.rb b/test/-ext-/thread_fd/test_thread_fd_close.rb
index a53949b93b..1d2ef63635 100644
--- a/test/-ext-/thread_fd/test_thread_fd_close.rb
+++ b/test/-ext-/thread_fd/test_thread_fd_close.rb
@@ -1,7 +1,6 @@
# frozen_string_literal: true
require 'test/unit'
require '-test-/thread_fd'
-require 'io/wait'
class TestThreadFdClose < Test::Unit::TestCase