Remove unused imports in test modules.
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index 8136002..ba2f521 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -1,7 +1,7 @@
 from test.test_support import verbose, run_unittest
 import re
 from re import Scanner
-import sys, os, traceback
+import sys, traceback
 from weakref import proxy
 
 # Misc tests from Tim Peters' re.doc
@@ -715,7 +715,7 @@
         self.assertRaises(OverflowError, _sre.compile, "abc", 0, [long_overflow])
 
 def run_re_tests():
-    from test.re_tests import benchmarks, tests, SUCCEED, FAIL, SYNTAX_ERROR
+    from test.re_tests import tests, SUCCEED, FAIL, SYNTAX_ERROR
     if verbose:
         print 'Running re_tests test suite'
     else: