Removed old construction

Author: botahamec

clippy_lints/src/lib.rs

@@ -925,7 +925,6 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
         ))
     });
     store.register_late_pass(|_| Box::new(no_mangle_with_rust_abi::NoMangleWithRustAbi));
-    store.register_late_pass(|_| Box::new(unnecessary_box_returns::UnnecessaryBoxReturns));
     store.register_late_pass(move |_| {
         Box::new(unnecessary_box_returns::UnnecessaryBoxReturns::new(
             avoid_breaking_exported_api,