Issue #23277: Remove unused support.run_unittest import.
diff --git a/Lib/test/test_codecmaps_cn.py b/Lib/test/test_codecmaps_cn.py
index f1bd384..89e51c6 100644
--- a/Lib/test/test_codecmaps_cn.py
+++ b/Lib/test/test_codecmaps_cn.py
@@ -3,7 +3,6 @@
# Codec mapping tests for PRC encodings
#
-from test import support
from test import multibytecodec_support
import unittest
diff --git a/Lib/test/test_codecmaps_hk.py b/Lib/test/test_codecmaps_hk.py
index 4c0c415..7a48d24 100644
--- a/Lib/test/test_codecmaps_hk.py
+++ b/Lib/test/test_codecmaps_hk.py
@@ -3,7 +3,6 @@
# Codec mapping tests for HongKong encodings
#
-from test import support
from test import multibytecodec_support
import unittest
diff --git a/Lib/test/test_codecmaps_kr.py b/Lib/test/test_codecmaps_kr.py
index 6cb41c8..471cd74 100644
--- a/Lib/test/test_codecmaps_kr.py
+++ b/Lib/test/test_codecmaps_kr.py
@@ -3,7 +3,6 @@
# Codec mapping tests for ROK encodings
#
-from test import support
from test import multibytecodec_support
import unittest
diff --git a/Lib/test/test_codecmaps_tw.py b/Lib/test/test_codecmaps_tw.py
index 2ea44b5..145a97d 100644
--- a/Lib/test/test_codecmaps_tw.py
+++ b/Lib/test/test_codecmaps_tw.py
@@ -3,7 +3,6 @@
# Codec mapping tests for ROC encodings
#
-from test import support
from test import multibytecodec_support
import unittest
diff --git a/Lib/test/test_dictcomps.py b/Lib/test/test_dictcomps.py
index 3c8b95c..0873071 100644
--- a/Lib/test/test_dictcomps.py
+++ b/Lib/test/test_dictcomps.py
@@ -1,7 +1,5 @@
import unittest
-from test import support
-
# For scope testing.
g = "Global variable"
diff --git a/Lib/test/test_email/test_asian_codecs.py b/Lib/test/test_email/test_asian_codecs.py
index 089269f..42bb3e9 100644
--- a/Lib/test/test_email/test_asian_codecs.py
+++ b/Lib/test/test_email/test_asian_codecs.py
@@ -3,7 +3,6 @@
# email package unit tests for (optional) Asian codecs
import unittest
-from test.support import run_unittest
from test.test_email.test_email import TestEmailBase
from email.charset import Charset
diff --git a/Lib/test/test_file.py b/Lib/test/test_file.py
index 67c3d86..65be30f 100644
--- a/Lib/test/test_file.py
+++ b/Lib/test/test_file.py
@@ -7,7 +7,7 @@
import io
import _pyio as pyio
-from test.support import TESTFN, run_unittest
+from test.support import TESTFN
from collections import UserList
class AutoFileTests:
diff --git a/Lib/test/test_fileinput.py b/Lib/test/test_fileinput.py
index bdf4252..4f67c25 100644
--- a/Lib/test/test_fileinput.py
+++ b/Lib/test/test_fileinput.py
@@ -22,7 +22,7 @@
from io import BytesIO, StringIO
from fileinput import FileInput, hook_encoded
-from test.support import verbose, TESTFN, run_unittest, check_warnings
+from test.support import verbose, TESTFN, check_warnings
from test.support import unlink as safe_unlink
from test import support
from unittest import mock
diff --git a/Lib/test/test_htmlparser.py b/Lib/test/test_htmlparser.py
index 11420b2..a7f53d3 100644
--- a/Lib/test/test_htmlparser.py
+++ b/Lib/test/test_htmlparser.py
@@ -3,7 +3,6 @@
import html.parser
import pprint
import unittest
-from test import support
class EventCollector(html.parser.HTMLParser):
diff --git a/Lib/test/test_importlib/test_namespace_pkgs.py b/Lib/test/test_importlib/test_namespace_pkgs.py
index 6639612..cb49f19 100644
--- a/Lib/test/test_importlib/test_namespace_pkgs.py
+++ b/Lib/test/test_importlib/test_namespace_pkgs.py
@@ -7,7 +7,6 @@
import unittest
from test.test_importlib import util
-from test.support import run_unittest
# needed tests:
#
diff --git a/Lib/test/test_iterlen.py b/Lib/test/test_iterlen.py
index 152f5fc..41c9752 100644
--- a/Lib/test/test_iterlen.py
+++ b/Lib/test/test_iterlen.py
@@ -42,7 +42,6 @@
"""
import unittest
-from test import support
from itertools import repeat
from collections import deque
from operator import length_hint
diff --git a/Lib/test/test_macpath.py b/Lib/test/test_macpath.py
index 80bec7a..0698ff5 100644
--- a/Lib/test/test_macpath.py
+++ b/Lib/test/test_macpath.py
@@ -1,5 +1,5 @@
import macpath
-from test import support, test_genericpath
+from test import test_genericpath
import unittest
diff --git a/Lib/test/test_sched.py b/Lib/test/test_sched.py
index fe8e785..f86f599 100644
--- a/Lib/test/test_sched.py
+++ b/Lib/test/test_sched.py
@@ -2,7 +2,6 @@
import sched
import time
import unittest
-from test import support
try:
import threading
except ImportError:
diff --git a/Lib/test/test_tools/test_pdeps.py b/Lib/test/test_tools/test_pdeps.py
index 6b5d5c8..0097623 100644
--- a/Lib/test/test_tools/test_pdeps.py
+++ b/Lib/test/test_tools/test_pdeps.py
@@ -3,7 +3,6 @@
import os
import unittest
import tempfile
-from test import support
from test.test_tools import scriptsdir, skip_if_missing, import_tool
diff --git a/Lib/test/test_userstring.py b/Lib/test/test_userstring.py
index 9bc8edd..35dce2c 100644
--- a/Lib/test/test_userstring.py
+++ b/Lib/test/test_userstring.py
@@ -3,7 +3,7 @@
import string
import unittest
-from test import support, string_tests
+from test import string_tests
from collections import UserString