aux_build the ui test

Author: Oneirical

tests/ui/external-crate-panic-handle-no-lint/app.rs

@@ -1,4 +1,5 @@
 //@ compile-flags: -Cpanic=abort --emit=obj
+//@ aux-build: panic.rs
 //@ check-pass
 
 // Defining a crate that provides panic handling as an external crate

tests/ui/external-crate-panic-handle-no-lint/panic.rs renamed to tests/ui/external-crate-panic-handle-no-lint/auxiliary/panic.rs

@@ -1,5 +1,4 @@
 #![crate_type = "lib"]
-#![feature(panic_handler)]
 #![no_std]
 
 use core::panic::PanicInfo;