update_kernel.sh: Do not suggest --ignore-verity option

It's usually a bad idea, especially for new team members who
actually read the warning in full.

--ignore-verity may have some rare use cases though (e.g. when
debugging verity itself), so we keep it, but we also add a
warning in the help file.

TEST=./update_kernel.sh --help

Change-Id: I64a7c76281d4752d9600b786ca1568930f635773
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/2488828
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Reviewed-by: Ross Zwisler <zwisler@google.com>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Commit-Queue: Douglas Anderson <dianders@chromium.org>
1 file changed