distrodata: cleanup after moving distro_tracking_fields
Remove some of the older fields that are not in the new list as we
are able to better automagically generate this directly from the
recipe files the extra files will go away.
To use this, one will have to include the appropirate files, such
as maintainers.inc, upstream_status.inc
Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
