Disabling Kerberos on Ubuntu

Our security tooling is flagging potential vulnerabilities in krb5, for the sake of this question lets just assume Kerberos is not a value add for me. We do not use Kerberos for authentication to this server, everything is handled through Amazon System Manager (SSM), which uses SSH keys to authenticate. As a result I thought the simple solution would be to disable Kerberos based authentication. I have thought of two potential ways to do this so far, but wanted to check that I didn't break anything: - In Ubuntu Kerberos auth should be handled by the pam-auth-update utility. So removing pam-auth-update should delete Kerberos. However, it might also delete other important things? - The other option I thought of was to go into etc/services and delete krb5kdc/kpropd/etc. entries. Not sure though if this will leave pieces of Kerberos lying around and I dont have a full list of services that Kerberos uses. Then finally, should I be doing this at all? Is this a bad idea, if I know I do not want to use Kerberos auth ever on this server?