Remove no_core ICE test.

tests/crashes/111883.rs

@@ -1,40 +0,0 @@
-//@ known-bug: #111883
-#![crate_type = "lib"]
-#![feature(arbitrary_self_types, no_core, lang_items)]
-#![no_core]
-
-#[lang = "sized"]
-trait Sized {}
-#[lang = "copy"]
-trait Copy {}
-#[lang = "receiver"]
-trait Receiver {}
-#[lang = "dispatch_from_dyn"]
-trait DispatchFromDyn<T> {}
-impl<'a, T: ?Sized + Unsize<U>, U: ?Sized> DispatchFromDyn<&'a U> for &'a T {}
-#[lang = "unsize"]
-trait Unsize<T: ?Sized> {}
-#[lang = "coerce_unsized"]
-pub trait CoerceUnsized<T: ?Sized> {}
-impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b T {}
-
-#[lang = "drop_in_place"]
-fn drop_in_place_fn<T>(a: &dyn Trait2<T>) {}
-
-pub trait Trait1 {
-    fn foo(&self);
-}
-
-pub struct Type1;
-
-impl Trait1 for Type1 {
-    fn foo(&self) {}
-}
-
-pub trait Trait2<T> {}
-
-pub fn bar1() {
-    let a = Type1;
-    let b = &a as &dyn Trait1;
-    b.foo();
-}