src: main: Remove useless return statement

src/main.rs

@@ -68,8 +68,6 @@ async fn main() -> anyhow::Result<()> {
                 debug!("Sending msg {}", msg);
                 //XXX: Panic if the matrix module can't get the message
                 bcast_tx.send((msg.into(), config.rooms.clone())).unwrap();
-
-                ()
             }).await.unwrap(); //XXX: Panic if the mqtt broker fails
         })
     };