Remove unused support.run_unittest imports.

It is not needed since tests use unittest.main().

Lib/test/test_charmapcodec.py

@@ -9,7 +9,7 @@ Written by Marc-Andre Lemburg (mal@lemburg.com).
 
 """#"
 
-import test.support, unittest
+import unittest
 
 import codecs
 

Lib/test/test_codecencodings_cn.py

@@ -3,7 +3,6 @@
 #   Codec encoding tests for PRC encodings.
 #
 
-from test import support
 from test import multibytecodec_support
 import unittest
 

Lib/test/test_codecencodings_hk.py

@@ -3,7 +3,6 @@
 #   Codec encoding tests for HongKong encodings.
 #
 
-from test import support
 from test import multibytecodec_support
 import unittest
 

Lib/test/test_codecencodings_iso2022.py

 # Codec encoding tests for ISO 2022 encodings.
 
-from test import support
 from test import multibytecodec_support
 import unittest
 

Lib/test/test_codecencodings_jp.py

@@ -3,7 +3,6 @@
 #   Codec encoding tests for Japanese encodings.
 #
 
-from test import support
 from test import multibytecodec_support
 import unittest
 

Lib/test/test_codecencodings_kr.py

@@ -3,7 +3,6 @@
 #   Codec encoding tests for ROK encodings.
 #
 
-from test import support
 from test import multibytecodec_support
 import unittest
 

Lib/test/test_codecencodings_tw.py

@@ -3,7 +3,6 @@
 #   Codec encoding tests for ROC encodings.
 #
 
-from test import support
 from test import multibytecodec_support
 import unittest
 

Lib/test/test_codecmaps_jp.py

@@ -3,7 +3,6 @@
 #   Codec mapping tests for Japanese encodings
 #
 
-from test import support
 from test import multibytecodec_support
 import unittest
 

Lib/test/test_epoll.py

@@ -28,7 +28,6 @@ import socket
 import time
 import unittest
 
-from test import support
 if not hasattr(select, "epoll"):
     raise unittest.SkipTest("test works only on Linux 2.6")
 

Lib/test/test_hmac.py

@@ -3,7 +3,6 @@ import hmac
 import hashlib
 import unittest
 import warnings
-from test import support
 
 
 def ignore_warning(func):

Lib/test/test_list.py

 import sys
-from test import support, list_tests
+from test import list_tests
 import pickle
 import unittest
 

Lib/test/test_pow.py

-import test.support, unittest
+import unittest
 
 class PowTest(unittest.TestCase):
 

Lib/test/test_range.py

 # Python test set -- built-in functions
 
-import test.support, unittest
+import unittest
 import sys
 import pickle
 import itertools

Lib/test/test_userdict.py

 # Check every path through every method of UserDict
 
-from test import support, mapping_tests
+from test import mapping_tests
 import unittest
 import collections
 

Lib/test/test_userlist.py

 # Check every path through every method of UserList
 
 from collections import UserList
-from test import support, list_tests
+from test import list_tests
 import unittest
 
 class UserListTest(list_tests.CommonTest):