Revert "[2/2] Camera: add software HDR rendering"

This reverts commit 895a59d2379e88dae0b68bbbd0a06d227347131a

Change-Id: Idb45c8300ccabe75c91bd7029baba03bec034db3
Merge "Revert "[2/2] Camera: add software HDR rendering"" into jb4.2