Delete unused AttributeLintKind variant

Author: mejrs

compiler/rustc_lint/src/early/diagnostics.rs

@@ -201,9 +201,6 @@ impl<'a> Diagnostic<'a, ()> for DecorateAttrLint<'_, '_, '_> {
             &AttributeLintKind::MissingOptionsForDiagnosticAttribute { attribute } => {
                 lints::MissingOptionsForDiagnosticAttribute { attribute }.into_diag(dcx, level)
             }
-            &AttributeLintKind::OnMoveMalformedFormatLiterals { name } => {
-                lints::OnMoveMalformedFormatLiterals { name }.into_diag(dcx, level)
-            }
             &AttributeLintKind::NonMetaItemDiagnosticAttribute => {
                 lints::NonMetaItemDiagnosticAttribute.into_diag(dcx, level)
             }

compiler/rustc_lint/src/lints.rs

@@ -3595,13 +3595,6 @@ pub(crate) struct MissingOptionsForDiagnosticAttribute {
 #[note("this method was used to add checks to the `Eq` derive macro")]
 pub(crate) struct EqInternalMethodImplemented;
 
-#[derive(Diagnostic)]
-#[diag("unknown parameter `{$name}`")]
-#[help("expect `Self` as format argument")]
-pub(crate) struct OnMoveMalformedFormatLiterals {
-    pub name: Symbol,
-}
-
 #[derive(Diagnostic)]
 #[diag("expected a literal or missing delimiter")]
 #[help(

compiler/rustc_lint_defs/src/lib.rs

@@ -753,9 +753,6 @@ pub enum AttributeLintKind {
     MissingOptionsForDiagnosticAttribute {
         attribute: &'static str,
     },
-    OnMoveMalformedFormatLiterals {
-        name: Symbol,
-    },
     NonMetaItemDiagnosticAttribute,
 }