Fix clippy issues

src/local/history.rs

@@ -1,6 +1,5 @@
 use std::env;
 
-use hostname;
 use uuid::Uuid;
 
 #[derive(Debug)]

src/local/import.rs

@@ -4,7 +4,6 @@
 use std::fs::File;
 use std::io::{BufRead, BufReader};
 
-use chrono::{TimeZone, Utc};
 use eyre::{eyre, Result};
 
 use crate::local::history::History;

src/main.rs

@@ -1,4 +1,3 @@
-use std::env;
 use std::path::PathBuf;
 
 use directories::ProjectDirs;
@@ -8,10 +7,9 @@ use uuid::Uuid;
 
 #[macro_use]
 extern crate log;
-use pretty_env_logger;
 
 use command::{history::HistoryCmd, import::ImportCmd};
-use local::database::{Database, SqliteDatabase};
+use local::database::SqliteDatabase;
 use local::history::History;
 
 mod command;