Remove ch_getstart from HA Guide

The getstart chapter was added during the splitup, I don't think we need
to add it in here at all. It's not common to have it.

This patch removes it again.

Change-Id: I27d9a64e01a1ea32fc9a2d1ffd6c0b5e17738055
Merge "Remove ch_getstart from HA Guide"