Remove dead ding

src/vc/mod.rs

@@ -110,17 +110,6 @@ impl EventHandler for Receiver {
 		ConnectData { channel_id, ..}
 	    ) => {
 		println!("VoiceDriver is connected.");
-		match channel_id {
-		    Some(chan) => {
-			let ding_src =
-			    std::env::var("DING_SOUND").expect("DING not found in DING_SOUND");
-			let ding = ffmpeg(ding_src).await.expect("no ding.");
-			let (audio, handle) = create_player(ding);
-			let mut call = self.call.lock().await;
-			call.play(audio);
-		    },
-		    None => {}
-		}
 	    },
 	    _ => {
 		// We won't be registering this struct for any more event classes.