Remove hack around distutils.dist.log, no longer relevant with pypa/d…

…istutils#183.

setuptools/logging.py

@@ -24,12 +24,6 @@ def configure():
         format="{message}", style='{', handlers=handlers, level=logging.DEBUG)
     monkey.patch_func(set_threshold, distutils.log, 'set_threshold')
 
-    # For some reason `distutils.log` module is getting cached in `distutils.dist`
-    # and then loaded again when patched,
-    # implying: id(distutils.log) != id(distutils.dist.log).
-    # Make sure the same module object is used everywhere:
-    distutils.dist.log = distutils.log
-
 
 def set_threshold(level):
     logging.root.setLevel(level*10)

setuptools/tests/test_distutils_adoption.py

@@ -135,24 +135,3 @@ def test_modules_are_not_duplicated_on_import(
     cmd = ['python', '-c', script]
     output = popen_text(venv.run)(cmd, env=win_sr(env)).strip()
     assert output == "success"
-
-
-ENSURE_LOG_IMPORT_IS_NOT_DUPLICATED = r"""
-# Similar to ENSURE_IMPORTS_ARE_NOT_DUPLICATED
-import distutils.dist as dist
-from distutils import log
-
-assert dist.log == log, (
-    f"\n{dist.log}\n!=\n{log}"
-)
-
-print("success")
-"""
-
-
-@pytest.mark.parametrize("distutils_version", "local stdlib".split())
-def test_log_module_is_not_duplicated_on_import(distutils_version, tmpdir_cwd, venv):
-    env = dict(SETUPTOOLS_USE_DISTUTILS=distutils_version)
-    cmd = ['python', '-c', ENSURE_LOG_IMPORT_IS_NOT_DUPLICATED]
-    output = popen_text(venv.run)(cmd, env=win_sr(env)).strip()
-    assert output == "success"