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

1 files changed, 2 insertions, 1 deletions

diff --git a/src/libstd/env.rs b/src/libstd/env.rs
index 4b6fbe01f76..24882c7f7ab 100644
--- a/src/libstd/env.rs
+++ b/src/libstd/env.rs
@@ -729,10 +729,11 @@ mod arch {
 mod tests {
     use prelude::v1::*;
     use super::*;
+
     use iter::repeat;
     use rand::{self, Rng};
     use ffi::{OsString, OsStr};
-    use path::PathBuf;
+    use path::{Path, PathBuf};
 
     fn make_rand_name() -> OsString {
         let mut rng = rand::thread_rng();