Rollup merge of rust-lang#157486 - lms0806:issue_157478, r=JonathanBrouwer

Remove unused attributes from issue-29485.rs.

Removed unused attributes from tests/ui/issues/issue-29485.rs.

Close rust-lang#157478

Author: jhpratt

tests/ui/issues/issue-29485.rs

@@ -1,12 +1,9 @@
 //@ run-pass
-#![allow(unused_attributes)]
 //@ aux-build:issue-29485.rs
 //@ needs-unwind
 //@ needs-threads
 //@ ignore-backends: gcc
 
-#[feature(recover)]
-
 extern crate a;
 
 fn main() {