Remove the wait for ssh-keygen

By this point, it should be done and we accidentally wait on wrong
thing.

confluent_osdeploy/genesis/initramfs/opt/confluent/bin/rungenesis

@@ -68,7 +68,6 @@ else
         ip route add default via $v4gw
     fi
 fi
-wait
 for pubkey in /etc/ssh/ssh_host*key.pub; do
     certfile=${pubkey/.pub/-cert.pub}
     privfile=${pubkey%.pub}