avutil/frame: undeprecate AVFrame.motion_val API

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavutil/frame.h

@@ -283,7 +283,6 @@ typedef struct AVFrame {
      * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];
      * @endcode
      */
-    attribute_deprecated
     int16_t (*motion_val[2])[2];
 
     /**
@@ -380,7 +379,6 @@ typedef struct AVFrame {
      * log2 of the size of the block which a single vector in motion_val represents:
      * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)
      */
-    attribute_deprecated
     uint8_t motion_subsample_log2;
 #endif