Revert "Camera: Adds support for meta data callbacks"

This reverts commit 46820e10a3748dd1e5e5f3f9eea33e13be3ae288.
Breaks build on p970
Revert "Frameworks: Enhance face detection"

This reverts commit f274625e1de909264f72079c0472fe440ed4a140.
breaks build on p970