removed conflicting "vtable_for"

Author: izagawd

compiler/rustc_const_eval/src/interpret/intrinsics.rs

@@ -265,22 +265,6 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
                     self.write_discriminant(FIRST_VARIANT, dest)?;
                 }
             }
-            sym::vtable_for => {
-                let tp_ty = instance.args.type_at(0);
-                let result_ty = instance.args.type_at(1);
-                //let dyn_metadata = tcx.require_lang_item(LangItem::DynMetadata, span);
-
-                ensure_monomorphic_enough(tcx, tp_ty)?;
-                ensure_monomorphic_enough(tcx, result_ty)?;
-
-                // Get vtable
-                //let vtable_ptr = self.get_vtable_ptr(tp_ty, result_ty.into())?;
-
-                //let dyn_metadata = metadata(vtable_ptr);
-                //let val = ConstValue::from_u128(tcx.type_id_hash(tp_ty).as_u128());
-                //let val = self.const_val_to_op(val, dest.layout.ty, Some(dest.layout))?;
-                //self.copy_op(&val, dest)?;
-            }
             sym::variant_count => {
                 let tp_ty = instance.args.type_at(0);
                 let ty = match tp_ty.kind() {