1 files changed, 0 insertions, 9 deletions
diff --git a/compiler/rustc_errors/src/diagnostic.rs b/compiler/rustc_errors/src/diagnostic.rs
index f6af0f879ca..1c440a0a07e 100644
--- a/compiler/rustc_errors/src/diagnostic.rs
+++ b/compiler/rustc_errors/src/diagnostic.rs
@@ -114,15 +114,6 @@ impl IntoDiagnosticArg for char {
     }
 }
 
-impl<T: IntoDiagnosticArg> IntoDiagnosticArg for Option<T> {
-    fn into_diagnostic_arg(self) -> DiagnosticArgValue<'static> {
-        match self {
-            Some(t) => t.into_diagnostic_arg(),
-            None => DiagnosticArgValue::Str(Cow::Borrowed("None")),
-        }
-    }
-}
-
 impl IntoDiagnosticArg for Symbol {
     fn into_diagnostic_arg(self) -> DiagnosticArgValue<'static> {
         self.to_ident_string().into_diagnostic_arg()