hide reservations if there are none; clean code

src/model/boatreservation.rs

@@ -2,7 +2,6 @@ use crate::model::{boat::Boat, user::User};
 use chrono::NaiveDate;
 use chrono::NaiveDateTime;
 use rocket::serde::{Deserialize, Serialize};
-use rocket::FromForm;
 use sqlx::{FromRow, SqlitePool};
 
 use super::log::Log;