Stabilize std::path::absolute

Author: ChrisDenton

src/lib.rs

@@ -12,7 +12,6 @@
 #![feature(let_chains)]
 #![feature(lint_reasons)]
 #![feature(trait_upcasting)]
-#![feature(absolute_path)]
 // Configure clippy and other lints
 #![allow(
     clippy::collapsible_else_if,

tests/pass/shims/path.rs

@@ -1,5 +1,4 @@
 //@compile-flags: -Zmiri-disable-isolation
-#![feature(absolute_path)]
 use std::path::{absolute, Path};
 
 #[track_caller]