Remove unused imports in test_wsgiref.py
diff --git a/Lib/test/test_wsgiref.py b/Lib/test/test_wsgiref.py
index 40fc35e..2469f67 100644
--- a/Lib/test/test_wsgiref.py
+++ b/Lib/test/test_wsgiref.py
@@ -1,14 +1,14 @@
-from __future__ import nested_scopes # Backward compat for 2.1
from unittest import TestCase
from wsgiref.util import setup_testing_defaults
from wsgiref.headers import Headers
from wsgiref.handlers import BaseHandler, BaseCGIHandler
from wsgiref import util
from wsgiref.validate import validator
-from wsgiref.simple_server import WSGIServer, WSGIRequestHandler, demo_app
+from wsgiref.simple_server import WSGIServer, WSGIRequestHandler
from wsgiref.simple_server import make_server
from StringIO import StringIO
from SocketServer import BaseServer
+
import os
import re
import sys