Documentation: Remove libretrend from coreboot distributors

As of 2020-07-21 their website says "we'll stop any device produce
and won't have a date to return (if we return)."

While wishing them best of luck (and welcome them back to the list
of distributors), let's take them off the list while they don't
ship hardawre.

Change-Id: Ia110d0e25bf73c3d7db270b0c2c0e23b99fc36ef
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58573
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

0 files changed, 0 insertions, 0 deletions