[Trivial]Fix the unnecessary "import xx as xx" renaming
This is to fix the unnecessary module importing renaming as
"from tacker.objects import vnf_package_vnfd as vnf_package_vnfd".
@@ -34,7 +34,7 @@ from tacker.objects import base
from tacker.objects import fields
from tacker.objects import vnf_instantiated_info
from tacker.objects import vnf_package as vnf_package_obj
-from tacker.objects import vnf_package_vnfd as vnf_package_vnfd
+from tacker.objects import vnf_package_vnfd
LOG = logging.getLogger(__name__)
