Camera: Remove unused CM strings

Change-Id: If1e59c1f425a0195b921addf7a227db6306a5795
Camera: Cleanup qcom strings

* Remove leftover ZSL setting
* Use correct strings & arrays for video HDR
* Remove tons of unused strings
* Make some strings shorter to fit better in the settings popup
* Use consistent on/off strings

Change-Id: I5e77bdd62a00b2c868ce159e2fc0c2e0044dc0f5
Merge branch 'cm' into HEAD