Revert "mm-video: vidc: vdec: advertise color formats based on usage hint"

This causes hwaccel video decoding to completely fail, most likely
due to our Adreno/C2D blobs being older.
This reverts commit db7776ffce0150dc2930f24e06f11d82d5d9868f.

Change-Id: I45ca3d76bcaaa0b7e21d7db2bf2b391f1db2d5f5