Remove unused imports

setuptools/__init__.py

@@ -7,7 +7,7 @@ import distutils.filelist
 from distutils.util import convert_path
 from fnmatch import fnmatchcase
 
-from setuptools.extern.six.moves import filter, filterfalse, map
+from setuptools.extern.six.moves import filter, map
 
 import setuptools.version
 from setuptools.extension import Extension

setuptools/namespaces.py

 import os
-import sys
 from distutils import log
 import itertools
 

setuptools/package_index.py

@@ -17,10 +17,9 @@ except ImportError:
 from setuptools.extern import six
 from setuptools.extern.six.moves import urllib, http_client, configparser, map
 
-import setuptools
 from pkg_resources import (
     CHECKOUT_DIST, Distribution, BINARY_DIST, normalize_path, SOURCE_DIST,
-    require, Environment, find_distributions, safe_name, safe_version,
+    Environment, find_distributions, safe_name, safe_version,
     to_filename, Requirement, DEVELOP_DIST,
 )
 from setuptools import ssl_support

setuptools/py33compat.py

 import dis
-import code
 import array
 import collections