newisys: Remove mainboard directory and Kconfig files

Since there are no longer any newisys mainboards, remove the directory
and Kconfig files.  This removes the Kconfig warning:

mainboard/newisys/Kconfig:3:warning: config symbol defined without type

Change-Id: Icb2e782173166a26fa261f6cfb81b665a846931e
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: http://review.coreboot.org/12423
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

0 files changed, 0 insertions, 0 deletions