ksmbd: remove md4 leftovers

[ Upstream commit 561a1cf5 ]

As NTLM authentication is removed, md4 is no longer used.
ksmbd remove md4 leftovers, i.e. select CRYPTO_MD4, MODULE_SOFTDEP md4.

Acked-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>