remove old print statement

src/control.rs

@@ -46,8 +46,6 @@ impl Controller {
     }
 
     fn process_image(&self, img: &[u8], idx: u8, tx: &SyncSender<FecPacket>) -> anyhow::Result<()> {
-        println!("Got an image of {} bytes", img.len());
-
         for p in ssdv_encode("VE9QLE", img, idx)? {
             tx.send(p.into()).context("TX thread died")?;
         }