diff --git a/src/libstd/sys/unix/ext/io.rs b/src/libstd/sys/unix/ext/io.rs
index 75aa72e3cff..296235e173d 100644
--- a/src/libstd/sys/unix/ext/io.rs
+++ b/src/libstd/sys/unix/ext/io.rs
@@ -72,13 +72,6 @@ pub trait IntoRawFd {
     fn into_raw_fd(self) -> RawFd;
 }
 
-#[stable(feature = "rust1", since = "1.0.0")]
-impl AsRawFd for RawFd {
-    fn as_raw_fd(&self) -> RawFd {
-        *self
-    }
-}
-
 #[stable(feature = "rust1", since = "1.0.0")]
 impl AsRawFd for fs::File {
     fn as_raw_fd(&self) -> RawFd {
@@ -91,14 +84,6 @@ unsafe fn from_raw_fd(fd: RawFd) -> fs::File {
         fs::File::from_inner(sys::fs::File::from_inner(fd))
     }
 }
-
-#[stable(feature = "into_raw_os", since = "1.4.0")]
-impl IntoRawFd for RawFd {
-    fn into_raw_fd(self) -> RawFd {
-        self
-    }
-}
-
 #[stable(feature = "into_raw_os", since = "1.4.0")]
 impl IntoRawFd for fs::File {
     fn into_raw_fd(self) -> RawFd {