Remove event triggering

There are no listeners this early in the program stage[1]

[1] cashubtc#394 (comment)

crates/cdk-mintd/src/main.rs

@@ -640,13 +640,6 @@ async fn check_pending_melt_quotes(
                 mint.localstore
                     .update_melt_quote_state(&pending_quote.id, pay_invoice_response.status)
                     .await?;
-
-                mint.pubsub_manager.melt_quote_status(
-                    &pending_quote,
-                    None,
-                    None,
-                    pay_invoice_response.status,
-                );
             }
         };
     }