bintext: remove unneeded get_buffer()

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

libavcodec/bintext.c

@@ -49,12 +49,6 @@ static av_cold int decode_init(AVCodecContext *avctx)
     int i;
 
     avctx->pix_fmt = PIX_FMT_PAL8;
-    s->frame.reference = 1;
-    if (avctx->get_buffer(avctx, &s->frame)) {
-        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return -1;
-    }
-
     p = avctx->extradata;
     if (p) {
         s->font_height = p[0];