refactor: remove unused imports in src/main.rs and src/modes/common.rs

src/main.rs

@@ -4,14 +4,12 @@ use std::fs;
 use std::str::FromStr;
 use std::path::PathBuf;
 use std::collections::HashMap;
-use std::env;
 use std::os::fd::FromRawFd;
 use std::process::Stdio; // For Stdio::null, Stdio::piped
 use nix::fcntl::{FdFlag};
 use nix::unistd::{close, pipe};
 use nix::Error as NixError;
 
-use regex::Regex;
 
 use anyhow::{Context, Result, Error, anyhow};
 use rusqlite::Connection;
@@ -46,7 +44,6 @@ pub mod db;
 use compression::CompressionType;
 use compression::program::CompressionEngineProgram;
 
-use humansize::BINARY;
 
 use is_terminal::IsTerminal;