mmal: Remove setting extradata on input format

This works only for extradata sizes up to 128 bytes. Additionally, I
could never actually see it doing anything. The new code using
MMAL_BUFFER_HEADER_FLAG_CONFIG now takes care of this.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

libavcodec/mmaldec.c

@@ -352,13 +352,6 @@ static av_cold int ffmmal_init_decoder(AVCodecContext *avctx)
     format_in->es->video.par.den = avctx->sample_aspect_ratio.den;
     format_in->flags = MMAL_ES_FORMAT_FLAG_FRAMED;
 
-    if (avctx->extradata_size) {
-        if ((status = mmal_format_extradata_alloc(format_in, avctx->extradata_size)))
-            goto fail;
-        format_in->extradata_size = avctx->extradata_size;
-        memcpy(format_in->extradata, avctx->extradata, format_in->extradata_size);
-    }
-
     if ((status = mmal_port_format_commit(decoder->input[0])))
         goto fail;