Removed unused dependencies

Author: Bernardo-MG

setup.py

@@ -1,10 +1,7 @@
 # -*- coding: utf-8 -*-
-import ast
-import re
 import io
 from os.path import dirname
 from os.path import join
-from codecs import open
 
 from setuptools import find_packages, setup
 from bernardomg.tox_test_command import ToxTestCommand