CORD-1244 cleanup use of get_tenant/get_service

Change-Id: Iae02c3d73d64a105dadade3e64f73cad885c34fa
diff --git a/xos/api/tenant/exampletenant.py b/xos/api/tenant/exampletenant.py
index f4778cc..386a77e 100644
--- a/xos/api/tenant/exampletenant.py
+++ b/xos/api/tenant/exampletenant.py
@@ -12,14 +12,14 @@
 from services.exampleservice.models import ExampleTenant, ExampleService
 
 def get_default_example_service():
-    example_services = ExampleService.get_service_objects().all()
+    example_services = ExampleService.objects.all()
     if example_services:
         return example_services[0]
     return None
 
 class ExampleTenantSerializer(PlusModelSerializer):
         id = ReadOnlyField()
-        provider_service = serializers.PrimaryKeyRelatedField(queryset=ExampleService.get_service_objects().all(), default=get_default_example_service)
+        provider_service = serializers.PrimaryKeyRelatedField(queryset=ExampleService.objects.all(), default=get_default_example_service)
         tenant_message = serializers.CharField(required=False)
         backend_status = ReadOnlyField()
 
@@ -36,7 +36,7 @@
     base_name = "exampletenant"
     method_name = "exampletenant"
     method_kind = "viewset"
-    queryset = ExampleTenant.get_tenant_objects().all()
+    queryset = ExampleTenant.objects.all()
     serializer_class = ExampleTenantSerializer
 
     @classmethod