removed useless use statements because I nuked the non working sqlx tests (will do later)

backend/src/tests.rs

@@ -1,12 +1,8 @@
-use crate::{driver_data::Driver, pog::SqlStruct};
-
 use super::*;
 use actix_web::{
     http::header::ContentType,
     test::{self, init_service},
 };
-use chrono::NaiveDate;
-use sqlx::{PgPool, Row};
 
 //TODO: sqlx offline mode for these tests
 #[actix_web::test]