Remove "All Rights Reserved" from FreeBSD Foundation copyrights
These ones were unambiguous cases where the Foundation was the only
listed copyright holder.
Sponsored by: The FreeBSD Foundation
(cherry picked from commit 5c2bc3db201a4fe8d7911cf816bea104d5dc2138)
(cherry picked from commit f06d322e9d925ab56a4aa8210a67637d4d341ab6)