remove test_support.TestSkipped and just use unittest.SkipTest
diff --git a/Lib/test/test_pep277.py b/Lib/test/test_pep277.py
index cb6210b..a61bcdf 100644
--- a/Lib/test/test_pep277.py
+++ b/Lib/test/test_pep277.py
@@ -3,7 +3,7 @@
 import sys, os, unittest
 from test import test_support
 if not os.path.supports_unicode_filenames:
-    raise test_support.TestSkipped, "test works only on NT+"
+    raise unittest.SkipTest, "test works only on NT+"
 
 filenames = [
     'abc',