diff --git a/mongoengine/python_support.py b/mongoengine/python_support.py
index 4c79a259..e51e1bc9 100644
--- a/mongoengine/python_support.py
+++ b/mongoengine/python_support.py
@@ -2,10 +2,6 @@
 Helper functions, constants, and types to aid with Python v2.7 - v3.x and
 PyMongo v2.7 - v3.x support.
 """
-
-import sys
-import warnings
-
 import pymongo
 import six