diff --git a/nova/tests/unit/compute/test_compute_mgr.py b/nova/tests/unit/compute/test_compute_mgr.py
index 53dc820877fd..a9d0f70e8c17 100644
--- a/nova/tests/unit/compute/test_compute_mgr.py
+++ b/nova/tests/unit/compute/test_compute_mgr.py
@@ -6437,8 +6437,6 @@ class ComputeManagerBuildInstanceTestCase(test.NoDBTestCase):
                 self.context, mock.sentinel.instance,
                 requested_networks=requested_networks)
 
-    @mock.patch('oslo_service.loopingcall._ThreadingEvent.wait',
-                new=mock.Mock())
     @mock.patch('nova.compute.manager.ComputeManager._deallocate_network')
     @mock.patch('nova.compute.manager.LOG.warning')
     def test_try_deallocate_network_retry_direct(self, warning_mock,
diff --git a/nova/tests/unit/virt/disk/mount/test_api.py b/nova/tests/unit/virt/disk/mount/test_api.py
index b92f43abf47b..baaa81ae7d93 100644
--- a/nova/tests/unit/virt/disk/mount/test_api.py
+++ b/nova/tests/unit/virt/disk/mount/test_api.py
@@ -28,8 +28,6 @@ AUTOMAP_PARTITION = "/dev/nullp77"
 MAP_PARTITION = "/dev/mapper/nullp77"
 
 
-# Make RetryDecorator not actually sleep on retries
-@mock.patch('oslo_service.loopingcall._ThreadingEvent.wait', new=mock.Mock())
 class MountTestCase(test.NoDBTestCase):
     def _test_map_dev(self, partition):
         mount = api.Mount(mock.sentinel.image, mock.sentinel.mount_dir)
diff --git a/nova/tests/unit/virt/libvirt/test_guest.py b/nova/tests/unit/virt/libvirt/test_guest.py
index 4596a8d12057..f0bba568a0c0 100644
--- a/nova/tests/unit/virt/libvirt/test_guest.py
+++ b/nova/tests/unit/virt/libvirt/test_guest.py
@@ -34,8 +34,6 @@ if sys.version_info > (3,):
     long = int
 
 
-# Make RetryDecorator not actually sleep on retries
-@mock.patch('oslo_service.loopingcall._ThreadingEvent.wait', new=mock.Mock())
 class GuestTestCase(test.NoDBTestCase):
 
     def setUp(self):