Remove deprecated code in packstack/plugins/serverprep_001.py
Remove deprecated code in packstack/plugins/serverprep_001.py

Change-Id: Ic64b7ea781441267a179bda6b3c69320a049cf60

openstack/packstack,imcsk8/packstack,mahak/packstack,fr34k8/packstack,palmer159/openstack-test,xbezdick/packstack,palmer159/openstack-test,fr34k8/packstack,palmer159/openstack-test,mahak/packstack,stackforge/packstack,mahak/packstack,imcsk8/packstack,imcsk8/packstack,openstack/packstack,xbezdick/packstack,fr34k8/packstack,xbezdick/packstack,stackforge/packstack,openstack/packstack,stackforge/packstack