$ virt-customize -a rhel-guest-image-7.2-20160302.0.x86_64.qcow2 --root-password password:PASSW0RD --uninstall cloud-init
[ 0.0] Examining the guest ...
[ 12.1] Setting a random seed
[ 12.1] Uninstalling packages: cloud-init
[ 14.5] Setting passwords
[ 15.9] Finishing off