Minor cleanup of Python 2 code

Author: henri-hulski

doc/conf.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-#
 # importscan documentation build configuration file, created by
 # sphinx-quickstart on Tue Mar 15 14:21:46 2016.
 #

setup.py

@@ -1,10 +1,9 @@
-import io
 from setuptools import setup, find_packages
 
 long_description = "\n".join(
     (
-        io.open("README.rst", encoding="utf-8").read(),
-        io.open("CHANGES.txt", encoding="utf-8").read(),
+        open("README.rst", encoding="utf-8").read(),
+        open("CHANGES.txt", encoding="utf-8").read(),
     )
 )