CORD-2741 Remove unnecessary import of LeastLoadedNodeScheduler

Change-Id: Ie5e1a055c9e1fff70e4a8ca72d65fe3a1716363f
diff --git a/xos/synchronizer/models/attic/header.py b/xos/synchronizer/models/attic/header.py
index 4555c8c..99ff8e5 100644
--- a/xos/synchronizer/models/attic/header.py
+++ b/xos/synchronizer/models/attic/header.py
@@ -24,7 +24,6 @@
 from django.db.models import Q
 from operator import itemgetter, attrgetter, methodcaller
 from core.models import Tag
-from core.models.service import LeastLoadedNodeScheduler
 import traceback
 from xos.exceptions import *
 from xosconfig import Config