Revert "fix libmix encoder klockwork issues, rename IntelMetadatabuffer APIs"

BZ: 50965

This reverts commit fefa62b938fb4764d49345f509f8718cd6a2a269.
The reason is wrong BZ number

Change-Id: I8938b2ad89d1b770a91387a919210b5d32eee8b8
Signed-off-by: Zhao Liang <leo.zhao@intel.com>
Reviewed-on: http://android.intel.com:8080/62247
Reviewed-by: Ding, Haitao <haitao.ding@intel.com>
Tested-by: Ding, Haitao <haitao.ding@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>
8 files changed