--- a/tests/filterpyflakes.py	Sun Jul 09 16:38:04 2017 -0400
+++ b/tests/filterpyflakes.py	Fri Jul 07 15:07:36 2017 -0400
@@ -35,7 +35,3 @@
 for line in lines:
     sys.stdout.write(line)
 print()
-
-# self test of "undefined name" detection
-if False:
-    print(undefinedname)