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/run-pass/blind-item-local-shadow.rs

@@ -15,6 +15,5 @@ mod bar {
 fn main() {
     let foo = || false;
     use bar::foo;
-    //~^ ERROR imports are not allowed after non-item statements
     assert_eq!(foo(), false);
 }