Remove Deserialize for Row and Sample

[zvolin]

          > If .encode is used in reality anyway, is it possible to remove #[serde(into = "RawExtendedDataSquare", try_from = "RawExtendedDataSquare")] so at least simmetrical binary serialization/deserialization works?

There is no symmetry in case of EDS because Deserialize is not implemented for it at all. I think that'd be the correct way also for Sample and Row, to just remove the Deserialize from them. They all serialize into Raw format, and then can be deserialized into Raw again but requiring additional info to reconstruct original type using from_raw.

If you need serde, I think you could wrap them in a struct containing also additional information required to make the deserialization correct

Originally posted by @zvolin in #495 (comment)