lavf: remove nonexistent symbols

Signed-off-by: Paul B Mahol <onemda@gmail.com>

cmdutils.h

@@ -123,7 +123,7 @@ double parse_number_or_die(const char *context, const char *numstr, int type,
  * not zero timestr is interpreted as a duration, otherwise as a
  * date
  *
- * @see parse_date()
+ * @see av_parse_time()
  */
 int64_t parse_time_or_die(const char *context, const char *timestr,
                           int is_duration);

libavformat/libavformat.v

@@ -24,11 +24,7 @@ LIBAVFORMAT_$MAJOR {
                 url_open;
                 url_close;
                 url_write;
-                url_get_max_packet_size;
                 #those are deprecated, remove on next bump
-                find_info_tag;
-                parse_date;
-                dump_format;
                 url_*;
                 ff_timefilter_destroy;
                 ff_timefilter_new;
@@ -36,9 +32,5 @@ LIBAVFORMAT_$MAJOR {
                 ff_timefilter_reset;
                 get_*;
                 put_*;
-                udp_set_remote_url;
-                udp_get_local_port;
-                init_checksum;
-                init_put_byte;
         local: *;
 };