cleanup setup_board for host board builds

Remove option of passing install plan filename used for reverse
dependency calculation for host board setups.

BUG=b:75396373
TEST=local builds

Change-Id: I205fe59b0f24b5c27dcaddf201f1791b7d11ef7a
Reviewed-on: https://chromium-review.googlesource.com/1055656
Commit-Ready: Gregory Meinke <gmeinke@chromium.org>
Tested-by: Gregory Meinke <gmeinke@chromium.org>
Reviewed-by: C Shapiro <shapiroc@google.com>
1 file changed