rtsp: Remove some unused variables from ff_rtsp_connect().

libavformat/rtsp.c

@@ -1357,7 +1357,6 @@ int ff_rtsp_connect(AVFormatContext *s)
 {
     RTSPState *rt = s->priv_data;
     char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
-    char *option_list, *option, *filename;
     int port, err, tcp_fd;
     RTSPMessageHeader reply1 = {0}, *reply = &reply1;
     int lower_transport_mask = 0;