This removes all tasks defined in board tasklist and changes syntax to
CONFIG_TEST_TASK_LIST and TASK_TEST.
BUG=chrome-os-partner:18598
TEST=None
BRANCH=None
Change-Id: Ie56c8edcb1dbf0ba0d0426ffce2a525594602a91
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/47738
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>