Fixup linting errors in test/test_integration_http11.py.

Author: Lukasa

test/test_integration_http11.py

@@ -163,7 +163,6 @@ def socket_handler(listener):
 
         assert c._sock is None
 
-
     def test_response_with_body(self):
         self.set_up()
 
@@ -297,4 +296,4 @@ def socket_handler(listener):
         send_event.set()
 
         with pytest.raises(HTTPUpgrade):
-            r = c.get_response()
+            c.get_response()