install-chef-suse: Stop creating /etc/crowbar.install.key
install-chef-suse: Stop creating /etc/crowbar.install.key

This is not needed anymore, and the machine-install user is also
unneeded now.

dirkmueller/crowbar,rsalevsky/crowbar,crowbar/crowbar,crowbar/crowbar,dirkmueller/crowbar,rsalevsky/crowbar