Remove useless periodic task that expires quota reservations

Quota reservations were removed in the Pike release, but there is still a
periodic task in the scheduler manager that runs every minute to expire
reservations, which won't actually do anything.

This patch remove this periodic task and related codes.

Change-Id: Idae069e8cf6ce69e112de08a22c94b6b590f9a69
Closes-bug: #1719048

1 files changed, 0 insertions, 32 deletions

diff --git a/nova/quota.py b/nova/quota.py
index 688ddd9f9f..0e95b15d28 100644
--- a/nova/quota.py
+++ b/nova/quota.py
@@ -903,17 +903,6 @@ class DbQuotaDriver(object):
 
         objects.Quotas.destroy_all_by_project(context, project_id)
 
-    def expire(self, context):
-        """Expire reservations.
-
-        Explores all currently existing reservations and rolls back
-        any that have expired.
-
-        :param context: The request context, for access checks.
-        """
-
-        db.reservation_expire(context)
-
 
 class NoopQuotaDriver(object):
     """Driver that turns quotas calls into no-ops and pretends that quotas
@@ -1231,16 +1220,6 @@ class NoopQuotaDriver(object):
         """
         pass
 
-    def expire(self, context):
-        """Expire reservations.
-
-        Explores all currently existing reservations and rolls back
-        any that have expired.
-
-        :param context: The request context, for access checks.
-        """
-        pass
-
 
 class BaseResource(object):
     """Describe a single resource for quota checking."""
@@ -1795,17 +1774,6 @@ class QuotaEngine(object):
 
         self._driver.destroy_all_by_project(context, project_id)
 
-    def expire(self, context):
-        """Expire reservations.
-
-        Explores all currently existing reservations and rolls back
-        any that have expired.
-
-        :param context: The request context, for access checks.
-        """
-
-        self._driver.expire(context)
-
     @property
     def resources(self):
         return sorted(self._resources.keys())