setup.py: Remove Python 2 support

setup.py

@@ -3,23 +3,10 @@
 import platform
 from os.path import join, abspath, dirname
 import numpy
-import unicodedata
 from subprocess import check_output
 
-#A unicode function that is compatible with Python 2 and 3
-u = lambda s: s if sys.version_info[0] > 2 else unicode(s, 'utf-8')
-myopen = lambda s: open(s) if sys.version_info[0] == 2 else open(s, encoding="utf-8") 
-
 from setuptools import setup
 from setuptools import Extension
-from setuptools.command.install import install
-
-def getBdistFriendlyString(s):
-    '''
-    Solve the issue with restructuredText README
-    "ordinal not in range error" when using bdist_mpkg or bdist_wininst
-    '''
-    return unicodedata.normalize('NFKD', u(s))
 
 VERSION = open(join('cylp', 'VERSION')).read().strip()
 
@@ -404,8 +391,8 @@ def getBdistFriendlyString(s):
                           extra_link_args=extra_link_args), ]
 
 
-s_README = getBdistFriendlyString(myopen('README.rst').read())
-s_AUTHORS = u(open('AUTHORS').read())
+s_README = open('README.rst').read()
+s_AUTHORS = open('AUTHORS').read()
 
 extra_files = ['cpp/*.hpp', 'cpp/*.h', 'cy/*.pxd', 'VERSION']