Remove `extern crate scoped_tls` from `stable_mir`.

compiler/stable_mir/src/compiler_interface.rs

@@ -221,7 +221,7 @@ pub trait Context {
 
 // A thread local variable that stores a pointer to the tables mapping between TyCtxt
 // datastructures and stable MIR datastructures
-scoped_thread_local!(static TLV: Cell<*const ()>);
+scoped_tls::scoped_thread_local!(static TLV: Cell<*const ()>);
 
 pub fn run<F, T>(context: &dyn Context, f: F) -> Result<T, Error>
 where

compiler/stable_mir/src/lib.rs

@@ -16,8 +16,6 @@
 //!
 //! The goal is to eventually be published on
 //! [crates.io](https://crates.io).
-#[macro_use]
-extern crate scoped_tls;
 
 use std::fmt;
 use std::fmt::Debug;