Remove unused parser

Since 1c02b58412, the parser is not used
anymore.

app/src/demuxer.c

@@ -228,20 +228,10 @@ run_demuxer(void *data) {
         goto end;
     }
 
-    demuxer->parser = av_parser_init(codec_id);
-    if (!demuxer->parser) {
-        LOGE("Could not initialize parser");
-        goto finally_close_sinks;
-    }
-
-    // We must only pass complete frames to av_parser_parse2()!
-    // It's more complicated, but this allows to reduce the latency by 1 frame!
-    demuxer->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
-
     AVPacket *packet = av_packet_alloc();
     if (!packet) {
         LOG_OOM();
-        goto finally_close_parser;
+        goto finally_close_sinks;
     }
 
     for (;;) {
@@ -267,8 +257,6 @@ run_demuxer(void *data) {
     }
 
     av_packet_free(&packet);
-finally_close_parser:
-    av_parser_close(demuxer->parser);
 finally_close_sinks:
     sc_demuxer_close_sinks(demuxer);
 end:

app/src/demuxer.h

@@ -21,7 +21,6 @@ struct sc_demuxer {
     struct sc_packet_sink *sinks[SC_DEMUXER_MAX_SINKS];
     unsigned sink_count;
 
-    AVCodecParserContext *parser;
     // successive packets may need to be concatenated, until a non-config
     // packet is available
     AVPacket *pending;