cleanup(yes, whoami): remove some old workaround to force cargo rebuilds

src/uu/whoami/src/whoami.rs

@@ -18,9 +18,6 @@ extern crate uucore;
 
 mod platform;
 
-// force a re-build whenever Cargo.toml changes
-const _CARGO_TOML: &str = include_str!("../Cargo.toml");
-
 pub fn uumain(args: Vec<String>) -> i32 {
     let app = app_from_crate!();
 

src/uu/yes/src/yes.rs

@@ -21,9 +21,6 @@ use std::borrow::Cow;
 use std::io::{self, Write};
 use uucore::zero_copy::ZeroCopyWriter;
 
-// force a re-build whenever Cargo.toml changes
-const _CARGO_TOML: &str = include_str!("../Cargo.toml");
-
 // it's possible that using a smaller or larger buffer might provide better performance on some
 // systems, but honestly this is good enough
 const BUF_SIZE: usize = 16 * 1024;