Delete objname in image_delete
Delete objname in image_delete

I found this throwning an error about "name" not being defined.  I
think it wants to use the objname it split out above.

Change-Id: If603edf5f9207332dc1370bdde3eb68a7c7e7511

openstack/python-openstacksdk,openstack-infra/shade,dtroyer/python-openstacksdk,stackforge/python-openstacksdk,stackforge/python-openstacksdk,openstack-infra/shade,dtroyer/python-openstacksdk,openstack/python-openstacksdk