diff --git a/nova/compute/api.py b/nova/compute/api.py
index 25075d7c9635..8cf7a52a0bcc 100644
--- a/nova/compute/api.py
+++ b/nova/compute/api.py
@@ -1815,17 +1815,6 @@ class API(base.Base):
         need to be looked up in a cell db and the normal delete path taken.
         """
         deleted = self._attempt_delete_of_buildrequest(context, instance)
-
-        # After service version 15 deletion of the BuildRequest will halt the
-        # build process in the conductor. In that case run the rest of this
-        # method and consider the instance deleted. If we have not yet reached
-        # service version 15 then just return False so the rest of the delete
-        # process will proceed usually.
-        service_version = objects.Service.get_minimum_version(
-            context, 'nova-osapi_compute')
-        if service_version < 15:
-            return False
-
         if deleted:
             # If we've reached this block the successful deletion of the
             # buildrequest indicates that the build process should be halted by
diff --git a/nova/tests/unit/compute/test_compute.py b/nova/tests/unit/compute/test_compute.py
index 370033468d94..8b85ad8ab3cc 100644
--- a/nova/tests/unit/compute/test_compute.py
+++ b/nova/tests/unit/compute/test_compute.py
@@ -8304,27 +8304,6 @@ class ComputeTestCase(BaseTestCase,
             legacy_notify, notify, instance.uuid, self.compute_api.notifier,
             self.context)
 
-    @mock.patch('nova.compute.utils.notify_about_instance_action')
-    @mock.patch('nova.objects.Instance.destroy')
-    @mock.patch('nova.objects.Service.get_minimum_version')
-    @mock.patch('nova.compute.utils.notify_about_instance_usage')
-    @mock.patch('nova.objects.BuildRequest.get_by_instance_uuid')
-    def test_delete_while_booting_instance_not_in_cell_db_cellsv1(
-            self, br_get_by_instance, legacy_notify, minimum_server_version,
-            instance_destroy, notify):
-
-        minimum_server_version.return_value = 14
-
-        instance = self._create_fake_instance_obj()
-        instance.host = None
-        instance.save()
-
-        self.compute_api._delete_instance(self.context, instance)
-
-        test_utils.assert_instance_delete_notification_by_uuid(
-            legacy_notify, notify, instance.uuid, self.compute_api.notifier,
-            self.context)
-
     @mock.patch('nova.compute.utils.notify_about_instance_action')
     @mock.patch('nova.objects.Instance.destroy')
     @mock.patch('nova.objects.InstanceMapping.get_by_instance_uuid')
diff --git a/nova/tests/unit/compute/test_compute_api.py b/nova/tests/unit/compute/test_compute_api.py
index 0bb1ccd101b5..3701c78158d2 100644
--- a/nova/tests/unit/compute/test_compute_api.py
+++ b/nova/tests/unit/compute/test_compute_api.py
@@ -1667,18 +1667,6 @@ class _ComputeAPIUnitTestMixIn(object):
                                                                  inst))
             self.assertTrue(build_req_mock.destroy.called)
 
-    @mock.patch.object(objects.Service, 'get_minimum_version', return_value=0)
-    def test_delete_while_booting_low_service_version(self,
-            mock_get_service_version):
-        inst = self._create_instance_obj()
-        with mock.patch.object(self.compute_api,
-                   '_attempt_delete_of_buildrequest') as mock_attempt_delete:
-            self.assertFalse(
-                self.compute_api._delete_while_booting(self.context, inst))
-            self.assertTrue(mock_attempt_delete.called)
-        mock_get_service_version.assert_called_once_with(self.context,
-                                                         'nova-osapi_compute')
-
     def test_delete_while_booting_buildreq_not_deleted(self):
         self.useFixture(nova_fixtures.AllServicesCurrent())
         inst = self._create_instance_obj()