Remove unused imports in tests (GH-14518)

diff --git a/Lib/test/test_locale.py b/Lib/test/test_locale.py
index e2c2178..792a15c 100644
--- a/Lib/test/test_locale.py
+++ b/Lib/test/test_locale.py
@@ -3,7 +3,7 @@
 import locale
 import sys
 import codecs
-import warnings
+
 
 class BaseLocalizedTest(unittest.TestCase):
     #