This file, which originates in U-Boot, has not been maintained
for a long time.
It was removed from U-Boot by commit 548b310c68ac.
Let's remove it from barebox, too.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>