main/dropbear: remove unsupported key type from dropbear.initd
* Generating DSS-Hostkey...
Unknown key type 'dss'
Usage: /usr/bin/dropbearkey -t <type> -f <filename> [-s bits]
-t type Type of key to generate. One of:
rsa
ecdsa
ed25519
-f filename Use filename for the secret key.
~/.ssh/id_dropbear is recommended for client keys.
-s bits Key size in bits, should be a multiple of 8 (optional)
ECDSA has sizes 256 384 521
Ed25519 has a fixed size of 256 bits
-y Just print the publickey and fingerprint for the
private key in <filename>.
-C Specify the key comment (email).