Revert "Keep a light version of the SBN around"

This reverts commit 75a7e2f9e959137ee97a0ea3d5953a7b3cb1cb82.

Reason for revert: Turns out this wipes out data we need :(

Change-Id: Id1d79dec17639440eae55e41fb4e91f0d9e6162c
Fixes: 131290765
1 file changed