Revert "smdk4412-common: camera: include support for face detection"

This reverts commit 8553629b0a37652082967b9389d22b6b74d9c9d0.

https://github.com/temasek/android_device_samsung_smdk4412-common/commit/914c222940ac651dcfb831bab3cbcdfb6fee9e42
According to temasek and many other devs, this commit has made the camera unstable. So I think reverting this is the best option for now.

Change-Id: I414a57ae57da9205626fa8c55859ec2d263a2e10