Revert "pam_krb5: forgot to add md5-cache file"

This reverts commit 5d75fb0b26896e09100f1c45e5e7454a3d033769.
Revert "pam_krb5: Add 2.4.9 from Fedora Project"

This reverts commit 2543c45ec7b5b3347b04c9aff6ac03a182bcd6d9.