The rush_ryu board was a development platform that never made it into
a product. Remove it as it's not available to anyone.
BUG=chrome-os-partner:55932
Change-Id: Ia3836ff8cade3009730543177a66736ae197572b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/16107
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
0c634159a3