OpenBSM: Remove $FreeSBD$ tags from the configuration files

In e61dc6cac4001f1abfc48ee27e4e623c2c044fa8 the configuration
files were taken off the vendor branch to help mergemaster
comparing them.

Since mergemaster will be deprecated and $FreeBSD$ tags aren't
used anymore, remove them.

While here, sync audit_filter with upstream commit 5e6da76 (typo).

Reviewed by: imp
Approved by: imp
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D44318