[clippy] since Rust 1.74 linter options can be specified in Cargo.toml

src/main.rs

@@ -1,8 +1,3 @@
-#![warn(clippy::pedantic)]
-#![warn(clippy::todo)]
-#![warn(clippy::unwrap_used)]
-#![allow(clippy::inline_always)]
-
 use std::{
     env::args,
     fs::File,