--- a/contrib/import-checker.py	Sat Aug 13 12:18:58 2016 +0900
+++ b/contrib/import-checker.py	Sat Aug 13 12:23:56 2016 +0900
@@ -26,7 +26,6 @@
 
 # Modules that have both Python and C implementations.
 _dualmodules = (
-    'parsers.py',
 )
 
 # Modules that must be aliased because they are commonly confused with