Revert "mm-video-v4l2: vidc: venc: Update color conversion decision"

This reverts commit d265a5dd03b00d726dfad5ccaa0e95939ef7ab91.

ColorConversion flag is accessing concurrently in both forward and
backward threads which is causing stability issues.
Gralloc handle in ETB is valid only when the filled Len is non zero.
Hence, verifying color format and updating color conversion variable
only buffer has valid handle.

Change-Id: Ib7e097c45503dc01dd65283950b3dc0c187f1b96
1 file changed