Intra prediction code cleanup
Move DPDC code for HOR/VER to xPredIntraAng function to be consistent with other angular modes. This also avoids code duplication by having the same PDPC code for HOR and VER modes.
Move DPDC code for HOR/VER to xPredIntraAng function to be consistent with other angular modes. This also avoids code duplication by having the same PDPC code for HOR and VER modes.