Remove unneeded extern crate

diff --git a/compiler/rustc_driver/src/lib.rs b/compiler/rustc_driver/src/lib.rs
index 195fc71b649d3e60edc407acc28088c23e4fbc01..4eabba575f42a425ef264e2d177e9178c9848af7 100644 (file)
--- a/compiler/rustc_driver/src/lib.rs
+++ b/compiler/rustc_driver/src/lib.rs
@@ -1,7 +1,4 @@
 // This crate is intentionally empty and a rexport of `rustc_driver_impl` to allow the code in
 // `rustc_driver_impl` to be compiled in parallel with other crates.
 
-#![allow(unused_extern_crates)]
-extern crate rustc_driver_impl;
-
 pub use rustc_driver_impl::*;