Remove unused imports in test modules.
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index b0366bd..8ec03087 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -261,7 +261,6 @@
             pass
         else:
             self.fail("NotImplemented should have caused TypeError")
-        import sys
         try:
             C(sys.maxint+1)
         except OverflowError:
@@ -654,7 +653,6 @@
     def test_module_subclasses(self):
         # Testing Python subclass of module...
         log = []
-        import types, sys
         MT = type(sys)
         class MM(MT):
             def __init__(self, name):
@@ -1131,7 +1129,6 @@
         # Test cyclical leaks [SF bug 519621]
         class F(object):
             __slots__ = ['a', 'b']
-        log = []
         s = F()
         s.a = [Counted(), s]
         self.assertEqual(Counted.counter, 1)
@@ -1140,7 +1137,7 @@
         self.assertEqual(Counted.counter, 0)
 
         # Test lookup leaks [SF bug 572567]
-        import sys,gc
+        import gc
         if hasattr(gc, 'get_objects'):
             class G(object):
                 def __cmp__(self, other):
@@ -1945,7 +1942,6 @@
                     return 'EPS'
                 return self
         # sys.stdout needs to be the original to trigger the recursion bug
-        import sys
         test_stdout = sys.stdout
         sys.stdout = test_support.get_original_stdout()
         try:
@@ -2309,7 +2305,6 @@
         self.assertIn('im_self', dir(a.Amethod))
 
         # Try a module subclass.
-        import sys
         class M(type(sys)):
             pass
         minstance = M("m")
@@ -3506,7 +3501,6 @@
             self.fail("d.foo should be undefined now")
 
         # Test a nasty bug in recurse_down_subclasses()
-        import gc
         class A(object):
             pass
         class B(A):
@@ -4327,7 +4321,6 @@
 
     def test_file_fault(self):
         # Testing sys.stdout is changed in getattr...
-        import sys
         test_stdout = sys.stdout
         class StdoutGuard:
             def __getattr__(self, attr):
@@ -4416,8 +4409,6 @@
     def test_not_implemented(self):
         # Testing NotImplemented...
         # all binary methods should be able to return a NotImplemented
-        import sys
-        import types
         import operator
 
         def specialmethod(self, other):