board/elm/board.h: Remove CONFIG_CMD_HOSTCMD

The command "hostcmd" in console isn't very useful and will cause
stack overflow in console task when processing some hash commands.

BUG=chromium:755048
BRANCH=none
TEST=make BOARD=elm -j
     make BOARD=elm tests
     There should be no hostcmd command in the console of elm.

Change-Id: Ifa721a1731bc1ebfb39e12430b6631338bdccd9f
Signed-off-by: Che-yu Wu <cheyuw@google.com>
Reviewed-on: https://chromium-review.googlesource.com/616600
Reviewed-by: Rong Chang <rongchang@chromium.org>
1 file changed