rm silly compile-fail test

it's a test to make sure a feature is *not* implemented, but it is now
implemented

src/test/compile-fail/binop-add-ptr.rs

@@ -1,14 +0,0 @@
-// Copyright 2012 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.
-
-// error-pattern:binary operation + cannot be applied to type `*int`
-
-fn die() -> *int { (0 as *int) + (0 as *int) }
-fn main() { }