CORD-2741 Remove unnecessary import of LeastLoadedNodeScheduler

Change-Id: I124b1aa555fbf76418c15a8be29fbf532d1e91c6
diff --git a/xos/synchronizer/models/attic/header.py b/xos/synchronizer/models/attic/header.py
index 81facf7..e9ca7c0 100644
--- a/xos/synchronizer/models/attic/header.py
+++ b/xos/synchronizer/models/attic/header.py
@@ -20,7 +20,6 @@
 from django.db.models import *
 from operator import itemgetter, attrgetter, methodcaller
 from core.models import Tag
-from core.models.service import LeastLoadedNodeScheduler
 from services.addressmanager.models import AddressManagerService, AddressManagerServiceInstance
 import traceback
 from xos.exceptions import *