remove users from trip after they have read the notificatoin

src/model/boatreservation.rs

@@ -175,7 +175,7 @@ WHERE end_date >= CURRENT_DATE ORDER BY end_date
                         boatreservation.usage
                     ),
                     "Neue Bootsreservierung",
-                    None,
+                    None,None
                 )
                 .await;
         }