Revert "Camera: Adds support for meta data callbacks"

This reverts commit 3ae8033f9ee833dfa9d160ffd20c985862650829.

Change-Id: Ic70d093a91c80b861bc93109ab39a6dfd53b3ed9
Merge "Revert "Camera: Adds support for meta data callbacks"" into android-4.4
Merge remote-tracking branch 'omni/android-4.4' into android-4.4