selfboot: drop dead code

selfboot: drop dead code

As a left over from elfboot times, selfboot keeps the segments to
load in the order in which they appeared in the original file as
well as in the order they will later appear in memory. This is not
needed in selfboot, so drop the code and structure members that handle
the in-file order.

Change-Id: I6be7a3a1bdf717fec1ee8e5b3227c63150580b41
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/768
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>