security/krb5-118: CVE-2022-42898: IGNORE and accelerate removal

krb5-118 was desupported by MIT when krb5-120 was released. CVE-2022-42898
now requires its accelerated removal from the tree. It is now
flagged IGNORE until its removal on Nov 30, 2022.

MFH: 2022Q4
Security: CVE-2022-42898