bpo-40443: Remove unused imports in tests (GH-19804)

tests/test_build_clib.py

@@ -8,7 +8,6 @@ from test.support import run_unittest, missing_compiler_executable
 from distutils.command.build_clib import build_clib
 from distutils.errors import DistutilsSetupError
 from distutils.tests import support
-from distutils.spawn import find_executable
 
 class BuildCLibTestCase(support.TempdirManager,
                         support.LoggingSilencer,

tests/test_config_cmd.py

@@ -39,7 +39,6 @@ class ConfigTestCase(support.LoggingSilencer,
 
     @unittest.skipIf(sys.platform == 'win32', "can't test on Windows")
     def test_search_cpp(self):
-        import shutil
         cmd = missing_compiler_executable(['preprocessor'])
         if cmd is not None:
             self.skipTest('The %r command is not found' % cmd)

tests/test_dist.py

@@ -8,7 +8,7 @@ import textwrap
 
 from unittest import mock
 
-from distutils.dist import Distribution, fix_help_options, DistributionMetadata
+from distutils.dist import Distribution, fix_help_options
 from distutils.cmd import Command
 
 from test.support import (

tests/test_spawn.py

@@ -2,8 +2,7 @@
 import os
 import stat
 import sys
-import unittest
-from unittest import mock
+import unittest.mock
 from test.support import run_unittest, unix_shell
 from test import support as test_support