Remove a dict.has_key() use to silence a warning raised under -3.

Lib/bsddb/dbutils.py

@@ -61,7 +61,7 @@ def DeadlockWrap(function, *_args, **_kwargs):
     """
     sleeptime = _deadlock_MinSleepTime
     max_retries = _kwargs.get('max_retries', -1)
-    if _kwargs.has_key('max_retries'):
+    if 'max_retries' in _kwargs:
         del _kwargs['max_retries']
     while True:
         try: