Remove unused imports in test modules.
diff --git a/Lib/test/test_struct.py b/Lib/test/test_struct.py
index 556a576..fc48c11 100644
--- a/Lib/test/test_struct.py
+++ b/Lib/test/test_struct.py
@@ -6,7 +6,7 @@
                         DeprecationWarning)
 
 from functools import wraps
-from test.test_support import TestFailed, verbose, run_unittest
+from test.test_support import run_unittest
 
 import sys
 ISBIGENDIAN = sys.byteorder == "big"