refactor: remove unused imports and add missing ones

src/modes/update.rs

@@ -1,11 +1,11 @@
-use anyhow::{Context, Result, anyhow};
-use std::fs;
+use anyhow::Result;
 use std::path::PathBuf;
 
 use crate::db;
 use clap::Command;
-use log::{debug, warn};
 use clap::error::ErrorKind;
+use log::{debug, info};
+use crate::CompressionType;
 use rusqlite::Connection;
 
 pub fn mode_update(