Snap: Rip out hdr-need-1x option

* This breaks HDR on every device that has this param, because this
  makes the camera HAL return *1* e*x*tra frame at 0 exposure, and
  since Snap doesn't know what to do with this extra frame, it
  erroneously saves it as a second picture on device storage
* Remove this option entirely to make HDR great again

Change-Id: I8ef4072eb030f4ab6e608a0da268274a3dc58e34
7 files changed