Auto merge of #31144 - jseyfried:remove_import_ordering_restriction, r=nrc

We no longer require `use` and `extern crate` items to precede other items in modules thanks to [RFC #385](https://github.com/rust-lang/rfcs/pull/385), but we still require `use` and `extern crate` items to precede statements in blocks (other items can appear anywhere in a block).

I think that this is a needless distinction between imports and other items that contradicts the intent of the RFC.

src/test/compile-fail/blind-item-block-middle.rs

@@ -14,5 +14,4 @@ fn main() {
     let bar = 5;
     //~^ ERROR declaration of `bar` shadows an enum variant or unit-like struct in scope
     use foo::bar;
-    //~^ ERROR imports are not allowed after non-item statements
 }

src/test/compile-fail/blind-item-local-shadow.rs

@@ -1,20 +0,0 @@
-// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-mod bar {
-    pub fn foo() -> bool { true }
-}
-
-fn main() {
-    let foo = || false;
-    use bar::foo;
-    //~^ ERROR imports are not allowed after non-item statements
-    assert_eq!(foo(), false);
-}