diff --git a/nova/conf/service.py b/nova/conf/service.py
index d99cdab7c..6a57efa1c 100644
--- a/nova/conf/service.py
+++ b/nova/conf/service.py
@@ -158,18 +158,7 @@ Possible Values:
 * Any positive integer
 * None (default value)
 """),
-    # NOTE(sdague): the network_manager has a bunch of different in
-    # tree classes that are still legit options. In Newton we should
-    # turn this into a selector.
-    cfg.StrOpt('network_manager',
-               choices=[
-                   'nova.network.manager.FlatManager',
-                   'nova.network.manager.FlatDHCPManager',
-                   'nova.network.manager.VlanManager',
-               ],
-               default='nova.network.manager.VlanManager',
-               help='Full class name for the Manager for network'),
-    ]
+]
 
 
 def register_opts(conf):