SEBA-457 Core xproto cleanup

Change-Id: Ib99680dd81016694094a5c230afdf9dcf2cb307e
diff --git a/lib/xos-synchronizer/xossynchronizer/synchronizer.py b/lib/xos-synchronizer/xossynchronizer/synchronizer.py
index 30d3ca0..f204785 100644
--- a/lib/xos-synchronizer/xossynchronizer/synchronizer.py
+++ b/lib/xos-synchronizer/xossynchronizer/synchronizer.py
@@ -33,8 +33,7 @@
         wait = False
         while not models_active:
             try:
-                _i = self.model_accessor.Instance.objects.first()
-                _n = self.model_accessor.NetworkTemplate.objects.first()
+                _i = self.model_accessor.Site.objects.first()
                 models_active = True
             except Exception as e:
                 self.log.info("Exception", e=e)