remove now unnecessary lang items

2 files changed, 2 insertions, 2 deletions

diff --git a/library/std/src/f32.rs b/library/std/src/f32.rs
index 1faf57e13db..70b5941c7c7 100644
--- a/library/std/src/f32.rs
+++ b/library/std/src/f32.rs
@@ -28,7 +28,7 @@ pub use core::f32::{
 };
 
 #[cfg(not(test))]
-#[lang = "f32_runtime"]
+#[cfg_attr(bootstrap, lang = "f32_runtime")]
 impl f32 {
     /// Returns the largest integer less than or equal to a number.
     ///
diff --git a/library/std/src/f64.rs b/library/std/src/f64.rs
index 22d58ab84cf..b90d068ec10 100644
--- a/library/std/src/f64.rs
+++ b/library/std/src/f64.rs
@@ -28,7 +28,7 @@ pub use core::f64::{
 };
 
 #[cfg(not(test))]
-#[lang = "f64_runtime"]
+#[cfg_attr(bootstrap, lang = "f64_runtime")]
 impl f64 {
     /// Returns the largest integer less than or equal to a number.
     ///