construct empty exceptions with no arguments, instead of () and {}

Author: radix

kazoo/exceptions.py

@@ -52,10 +52,7 @@ def _invalid_error_code():
 
 def _zookeeper_exception(code):
     def decorator(klass):
-        def create(*args, **kwargs):
-            return klass(args, kwargs)
-
-        EXCEPTIONS[code] = create
+        EXCEPTIONS[code] = klass
         klass.code = code
         return klass