Update for rust-lorawan and lora-phy version 2.

examples/stm32l0/src/bin/lora_p2p_send.rs

@@ -41,10 +41,8 @@ async fn main(_spawner: Spawner) {
 
     let iv = Stm32l0InterfaceVariant::new(nss, reset, irq, None, None).unwrap();
 
-    let mut delay = Delay;
-
     let mut lora = {
-        match LoRa::new(SX1276_7_8_9::new(BoardType::Stm32l0Sx1276, spi, iv), false, &mut delay).await {
+        match LoRa::new(SX1276_7_8_9::new(BoardType::Stm32l0Sx1276, spi, iv), false, Delay).await {
             Ok(l) => l,
             Err(err) => {
                 info!("Radio error = {}", err);
@@ -97,7 +95,7 @@ async fn main(_spawner: Spawner) {
         }
     };
 
-    match lora.sleep(&mut delay).await {
+    match lora.sleep(false).await {
         Ok(()) => info!("Sleep successful"),
         Err(err) => info!("Sleep unsuccessful = {}", err),
     }