removed extra file and updated sql note

bin/nova-listinstances

@@ -1,38 +0,0 @@
-#!/usr/bin/env python
-# vim: tabstop=4 shiftwidth=4 softtabstop=4
-
-# Copyright (c) 2010 Openstack, LLC.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-#
-# Duplicates the functionality of euca-describe-instances, but doesn't require
-# going through the API.  Does a direct query to the datastore.  This is
-# mostly a test program written for the scheduler
-#
-
-"""
-List instances by doing a direct query to the datastore
-"""
-
-from nova.compute import model
-
-data_needed = ['image_id', 'memory_kb', 'local_gb', 'node_name', 'vcpus']
-
-instances = model.InstanceDirectory().all
-
-for instance in instances:
-    print 'Instance: %s' % instance['instance_id']
-    for x in data_needed:
-      print '    %s: %s' % (x, instance[x])
-

nova/db/sqlalchemy/api.py

@@ -69,6 +69,7 @@ def service_get_all_compute_sorted(context):
         #             FROM services LEFT OUTER JOIN
         #             (SELECT host, count(*) AS instance_count
         #              FROM instances GROUP BY host) AS inst_count
+        #             ON services.host == inst_count.host
         topic = 'compute'
         label = 'instance_count'
         subq = session.query(models.Instance.host,