libavcodec/als: remove check for predictor order of a block

Reverts commit 18f94df8, fixes ticket #5297.
Signed-off-by: Umair Khan <omerjerk@gmail.com>

libavcodec/alsdec.c

@@ -704,11 +704,6 @@ static int read_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)
         } else {
             *bd->opt_order = sconf->max_order;
         }
-        if (*bd->opt_order > bd->block_length) {
-            *bd->opt_order = bd->block_length;
-            av_log(avctx, AV_LOG_ERROR, "Predictor order too large.\n");
-            return AVERROR_INVALIDDATA;
-        }
         opt_order = *bd->opt_order;
 
         if (opt_order) {