revert the addition of _pickle because it was causing havok with 64-bit
diff --git a/Lib/test/test_pickletools.py b/Lib/test/test_pickletools.py
index 3e701b0..ccb6c9c 100644
--- a/Lib/test/test_pickletools.py
+++ b/Lib/test/test_pickletools.py
@@ -12,6 +12,8 @@
     def loads(self, buf):
         return pickle.loads(buf)
 
+    module = pickle
+    error = KeyError
 
 def test_main():
     support.run_unittest(OptimizedPickleTests)