backend: delete user instead of license

crates/backend/src/controller/user.rs

@@ -113,7 +113,7 @@ impl UserController {
             return Err(ErrorUnauthorized("Invalid Permissions"));
         }
         let db = &state.db;
-        entity::license::Entity::delete_by_id(id)
+        entity::user::Entity::delete_by_id(id)
             .exec(db)
             .await
             .map_err(ErrorInternalServerError)?;