OpenBSM: Remove $FreeSBD$ tags from the configuration files

In e61dc6cac4 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

contrib/openbsm/etc/audit_class

@@ -1,6 +1,3 @@
-#
-# $FreeBSD$
-#
 0x00000000:no:invalid class
 0x00000001:fr:file read
 0x00000002:fw:file write

contrib/openbsm/etc/audit_control

@@ -1,6 +1,3 @@
-#
-# $FreeBSD$
-#
 dir:/var/audit
 dist:off
 flags:lo,aa

contrib/openbsm/etc/audit_event

@@ -1,6 +1,3 @@
-#
-# $FreeBSD$
-#
 # The mapping between event identifiers and values is also hard-coded in
 # audit_kevents.h and audit_uevents.h, so changes must occur in both places,
 # and programs, such as the kernel, may need to be recompiled to recognize
@@ -442,7 +439,7 @@
 43079:AUE_CAPGET:capget(2):pc
 43080:AUE_CAPSET:capset(2):pc
 43081:AUE_PIVOT_ROOT:pivot_root(2):pc
-43082:AUE_RTPRIO::rtprio(2):pc
+43082:AUE_RTPRIO:rtprio(2):pc
 43083:AUE_SCHED_GETPARAM:sched_getparam(2):ad
 43084:AUE_SCHED_SETPARAM:sched_setparam(2):ad
 43085:AUE_SCHED_GET_PRIORITY_MAX:sched_get_priority_max(2):ad

contrib/openbsm/etc/audit_filter

@@ -1,5 +1,2 @@
-#
-# $FreeBSD$
-#
 # modulename:various arguments here
 #

contrib/openbsm/etc/audit_user

@@ -1,4 +1 @@
-#
-# $FreeBSD$
-#
 root:lo:no

contrib/openbsm/etc/audit_warn

@@ -1,6 +1,3 @@
 #!/bin/sh
-#
-# $FreeBSD$
-#
 
 logger -p security.warning "audit warning: $@"