std: Remove old_io/old_path from the prelude

This commit removes the reexports of `old_io` traits as well as `old_path` types
and traits from the prelude. This functionality is now all deprecated and needs
to be removed to make way for other functionality like `Seek` in the `std::io`
module (currently reexported as `NewSeek` in the io prelude).

Closes #23377
Closes #23378

src/libcore/prelude.rs

@@ -29,8 +29,6 @@ pub use marker::{Copy, Send, Sized, Sync};
 pub use ops::{Drop, Fn, FnMut, FnOnce};
 
 // Reexported functions
-#[allow(deprecated)]
-pub use iter::range;
 pub use mem::drop;
 
 // Reexported types and traits