Remove public interface now that cli is a different crate

cli/src/main.rs

@@ -1,8 +1,5 @@
 use std::io::Write;
 
-// until args.rs is removed from the lib
-pub(crate) use watchexec::{config, error, run, Shell};
-
 mod args;
 
 fn main() -> error::Result<()> {