lavf: remove nonexistent functions from the version file

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/libavformat.v

@@ -3,9 +3,6 @@ LIBAVFORMAT_$MAJOR {
                 #FIXME those are for ffserver
                 ff_inet_aton;
                 ff_socket_nonblock;
-                ffm_set_write_index;
-                ffm_read_write_index;
-                ffm_write_write_index;
                 ff_mpegts_parse_close;
                 ff_mpegts_parse_open;
                 ff_mpegts_parse_packet;
@@ -21,17 +18,9 @@ LIBAVFORMAT_$MAJOR {
                 ffurl_size;
                 ffurl_write;
                 ffurl_protocol_next;
-                url_open;
-                url_close;
-                url_write;
                 #those are deprecated, remove on next bump
                 url_*;
-                ff_timefilter_destroy;
-                ff_timefilter_new;
-                ff_timefilter_update;
-                ff_timefilter_reset;
                 get_*;
-                put_*;
                 ff_codec_get_id;
         local: *;
 };