Removed superfluous import.

Author: Bernhard Reiter

CHANGES.txt

@@ -9,7 +9,7 @@ Fixed:
 
 - Do not depend on a CPython implementation detail anymore to make Roundup 
   more compatible with other Python implementations like PyPy.
-  Closes issue2550707. Thanks to Christof Meerwald. (Bernhard Reiter)
+  Closes issue2550707. Thanks to Christof Meerwald. (Bernhard Reiter, Richard)
 - Yet another fix to the mail gateway, messages got *all* files of
   an issue, not just the new ones. Thanks to Rafal Bisingier for
   reporting and proposing a fix. The regression test was updated.

roundup/instance.py

@@ -30,7 +30,6 @@
 
 import os
 import sys
-import __builtin__
 from roundup import configuration, mailgw
 from roundup import hyperdb, backends, actions
 from roundup.cgi import client, templating