asyncio: remove unused imports and unused variables noticed by pyflakes
diff --git a/Lib/asyncio/test_utils.py b/Lib/asyncio/test_utils.py
index 2a8a241..dd87789 100644
--- a/Lib/asyncio/test_utils.py
+++ b/Lib/asyncio/test_utils.py
@@ -15,7 +15,7 @@
 import unittest.mock
 
 from http.server import HTTPServer
-from wsgiref.simple_server import make_server, WSGIRequestHandler, WSGIServer
+from wsgiref.simple_server import WSGIRequestHandler, WSGIServer
 
 try:
     import ssl