refactor: missing imports, more unused imports

src/lib.rs

@@ -1,9 +1,5 @@
 use chrono::{DateTime, Duration, Utc};
-use std::{fs::{self, File}};
+use std::fs::{self};
-use std::path::Path;
-use serde::{Deserialize, Serialize};
-use std::io::{self, BufRead, BufReader};
-use rand::seq::SliceRandom;
 
 
 

src/test.rs

@@ -1,3 +1,5 @@
+use chrono::Duration;
+
 use super::*;
 
 #[test]