Revert "camera: add a workaround for slow camera startup Patch #5"

This reverts commit cc3652825a1495d6ce8940d86aca0f4c740fcbef.
camera: add a workaround for slow initialisation

* On certain devices, the first camera initialisation
  after boot takes long, and fails sometimes.
* Add an app that opens and cloeses the camera on boot,
  so that when the user opens a camera app, it has
  already been initialised and will work.
* Enable by setting TARGET_NEEDS_CAMERA_WORKAROUND
  and building CameraWorkaround

Signed-off-by: Chirayu Desai <cdesai@cyanogenmod.org>
Change-Id: I0623a0777ad83741c1c36355dffa8adf3a510df3