Removed unused imports.

Lib/distutils/command/config.py

@@ -9,7 +9,7 @@
 this header file lives".
 """
 
-import sys, os, re
+import os, re
 
 from distutils.core import Command
 from distutils.errors import DistutilsExecError

Lib/distutils/command/register.py

@@ -5,7 +5,7 @@
 
 # created 2002/10/21, Richard Jones
 
-import os, string, getpass
+import getpass
 import io
 import urllib.parse, urllib.request
 from warnings import warn

Lib/distutils/command/sdist.py

@@ -3,7 +3,6 @@
 Implements the Distutils 'sdist' command (create a source distribution)."""
 
 import os
-import string
 import sys
 from types import *
 from glob import glob