avutil/frame: remove unneccessary metadata pointer getter

Signed-off-by: James Almer <jamrial@gmail.com>

libavutil/frame.c

@@ -48,8 +48,6 @@ MAKE_ACCESSORS(AVFrame, frame, enum AVColorRange, color_range)
                (frame)->channels == \
                av_get_channel_layout_nb_channels((frame)->channel_layout))
 
-AVDictionary **avpriv_frame_get_metadatap(AVFrame *frame) {return &frame->metadata;};
-
 #if FF_API_FRAME_QP
 int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int qp_type)
 {

libavutil/frame.h

@@ -587,7 +587,6 @@ int     av_frame_get_decode_error_flags   (const AVFrame *frame);
 void    av_frame_set_decode_error_flags   (AVFrame *frame, int     val);
 int     av_frame_get_pkt_size(const AVFrame *frame);
 void    av_frame_set_pkt_size(AVFrame *frame, int val);
-AVDictionary **avpriv_frame_get_metadatap(AVFrame *frame);
 #if FF_API_FRAME_QP
 int8_t *av_frame_get_qp_table(AVFrame *f, int *stride, int *type);
 int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int type);