Revert "msm: vidc: Query the core on VIDIOC_G_FMT"

This reverts commit 85663d14c0126d8fa27ee62125d03e2dcd47535d.
Revert "msm: vidc: Add description of LTR Extradata"

This reverts commit 8d6d9220e42c7be4eb28825436f37df4fb216b50.