While at it, also relinquish active commit rights:
[x years between commits] is probably a poster child example of inactivity :)
Signed-off-by: Eric Blake <eblake@redhat.com>
AUTHORS.in tracks the maintainers, as well as some folks who were
previously in AUTHORS but don't have a git commit with proper
attribution.
Generated output is sorted alphabetically and lacks pretty spacing, so
tweak AUTHORS.in to follow the same format.
Additionally, drop the syntax-check rule that previously validated
AUTHORS against git log.
