Move bios logging code out of boot critical path
Move bios logging code out of boot critical path

This change removes the bios information logging code, which is now
moved to session_manager_setup.sh in the login_manager. This was
requested to reduce the boot time.

A second CL will reinstate the code in then new place.

BUG=chromium-os:5557
TEST=Build image, check about:system on three different machine types

Change-Id: Ib526cc6d8c67d58b4c893ee9384d396616f52b58

Review URL: http://codereview.chromium.org/3590007

joshfire/chromiumos-platform-init