Remove orphaned db method instance_test_and_set

Commit 86544fad81f95b74407a76bea8b081f490e2832f removed the only use
of this method together with the sqlalchemy implementation of it but
forgot to remove it from db.api.

Change-Id: I751f99ee64cdeab56f1f3fd9f846157f241804a2

1 files changed, 0 insertions, 9 deletions

diff --git a/nova/db/api.py b/nova/db/api.py
index c1d28e33a..4c00f05f9 100644
--- a/nova/db/api.py
+++ b/nova/db/api.py
@@ -654,15 +654,6 @@ def instance_get_all_hung_in_rebooting(context, reboot_window):
     return IMPL.instance_get_all_hung_in_rebooting(context, reboot_window)
 
 
-def instance_test_and_set(context, instance_uuid, attr, ok_states,
-                          new_state):
-    """Atomically check if an instance is in a valid state, and if it is, set
-    the instance into a new state.
-    """
-    return IMPL.instance_test_and_set(context, instance_uuid, attr,
-                                      ok_states, new_state)
-
-
 def instance_update(context, instance_uuid, values, update_cells=True):
     """Set the given properties on an instance and update it.