Remove unused imports in test modules.
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index 809fd86..77ce7ed 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -6,7 +6,6 @@
from test import mapping_tests
import pickle, cPickle, copy
from random import randrange, shuffle
-import operator
import keyword
import re
from collections import Hashable, Iterable, Iterator
@@ -848,7 +847,7 @@
d = self._empty_mapping()
self.assertRaises(KeyError, d.popitem)
-import doctest, collections
+import collections
def test_main(verbose=None):
NamedTupleDocs = doctest.DocTestSuite(module=collections)