Bug in Calamares when using unencrypted boot?

Just two questions on this, although it may be little bit off-topic. I followed your HOWTO, but I chose a separate unencrypted boot partition. So, as far as I understood, I can delete the entry in /etc/crypttab and delete the /crypto_keyfile.bin and emtpy the key slot. If I do not empty the key slot, would this be a problem here since I don’t want to kill the wrong key slot? Second, is this

missing in the HOWTO?