Revert "rustc_trans: Fix type projection debuginfo" -- it potentially papers over a lack

of normalization that should have taken place.

This reverts commit f7745a9be3.

src/test/debuginfo/associated_types.rs

@@ -1,28 +0,0 @@
-// Copyright 2013-2014 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.
-
-// ignore-android: FIXME(#10381)
-// min-lldb-version: 310
-
-// compile-flags:-g
-
-struct Peekable<I> where I: Iterator {
-    _iter: I,
-    _next: Option<<I as Iterator>::Item>,
-}
-
-fn main() {
-    let mut iter = Vec::<i32>::new().into_iter();
-    let next = iter.next();
-    let _v = Peekable {
-        _iter: iter,
-        _next : next,
-    };
-}