sdk: move chromiumos-niceties.sh to chromite

This makes it easier to manage & install updates.

BUG=None
TEST=CQ passes

Change-Id: I15cce1cd32c539dc1def45c241d97fc55ec172aa
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/2787569
Reviewed-by: Sergey Frolov <sfrolov@google.com>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
2 files changed