Remove unused imports in tests (GH-14518)

diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index e2d04d5..e532be6 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -13,7 +13,7 @@
 import types
 import unittest
 
-from collections import namedtuple, Counter, OrderedDict, _count_elements, _tuplegetter
+from collections import namedtuple, Counter, OrderedDict, _count_elements
 from collections import UserDict, UserString, UserList
 from collections import ChainMap
 from collections import deque