Remove an old debug statement

src/main.rs

@@ -64,7 +64,6 @@ fn list_update(list_id: String, new_list: Json<List>, lists: State<ListStore>) -
     let mut lists = lists.write().unwrap();
     let list = lists.iter_mut().find( |list| list.id == list_id )?;
     list.update_data(&new_list.data);
-    println!("update list {} with list data {:?}", list_id, new_list.data);
     Some(Json(list.clone()))
 }