Fix setup.py for newer python versions

[darix]

Index: pg_chameleon-2.0.19/setup.py
===================================================================
--- pg_chameleon-2.0.19.orig/setup.py
+++ pg_chameleon-2.0.19/setup.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
-from setuptools import setup, setuptools
+import setuptools 
 
 def readme():
     with open('README.rst') as f:
@@ -8,7 +8,7 @@ def readme():
 
 package_data = {'pg_chameleon': ['configuration/config-example.yml','sql/upgrade/*.sql','sql/drop_schema.sql','sql/create_schema.sql', 'LICENSE.txt']}
 
-setup(
+setuptools.setup(
     name="pg_chameleon",
     version="2.0.19",
     description="MySQL to PostgreSQL replica and migration",