removed dead method

nova/scheduler/api.py

@@ -49,10 +49,6 @@ def _call_scheduler(method, context, params=None):
 class API(object):
     """API for interacting with the scheduler."""
 
-    @classmethod
-    def _is_current_zone(cls, zone):
-        return True
-
     @classmethod
     def get_zone_list(cls, context):
         """Return a list of zones assoicated with this zone."""