Remove unused diagnostic struct

compiler/rustc_builtin_macros/src/errors.rs

@@ -136,27 +136,6 @@ pub(crate) struct BenchSig {
     pub(crate) span: Span,
 }
 
-#[derive(Diagnostic)]
-#[diag(builtin_macros_test_arg_non_lifetime)]
-pub(crate) struct TestArgNonLifetime {
-    #[primary_span]
-    pub(crate) span: Span,
-}
-
-#[derive(Diagnostic)]
-#[diag(builtin_macros_should_panic)]
-pub(crate) struct ShouldPanic {
-    #[primary_span]
-    pub(crate) span: Span,
-}
-
-#[derive(Diagnostic)]
-#[diag(builtin_macros_test_args)]
-pub(crate) struct TestArgs {
-    #[primary_span]
-    pub(crate) span: Span,
-}
-
 #[derive(Diagnostic)]
 #[diag(builtin_macros_alloc_must_statics)]
 pub(crate) struct AllocMustStatics {

compiler/rustc_hir_analysis/src/errors.rs

@@ -1004,13 +1004,6 @@ pub(crate) struct StaticSpecialize {
     pub span: Span,
 }
 
-#[derive(Diagnostic)]
-#[diag(hir_analysis_missing_tilde_const)]
-pub(crate) struct MissingTildeConst {
-    #[primary_span]
-    pub span: Span,
-}
-
 #[derive(Diagnostic)]
 pub(crate) enum DropImplPolarity {
     #[diag(hir_analysis_drop_impl_negative)]

compiler/rustc_parse/src/errors.rs

@@ -557,14 +557,6 @@ pub(crate) struct CatchAfterTry {
     pub span: Span,
 }
 
-#[derive(Diagnostic)]
-#[diag(parse_gen_fn)]
-#[help]
-pub(crate) struct GenFn {
-    #[primary_span]
-    pub span: Span,
-}
-
 #[derive(Diagnostic)]
 #[diag(parse_comma_after_base_struct)]
 #[note]

compiler/rustc_resolve/src/errors.rs

@@ -7,32 +7,6 @@ use rustc_span::{
 
 use crate::{late::PatternSource, Res};
 
-#[derive(Diagnostic)]
-#[diag(resolve_parent_module_reset_for_binding, code = E0637)]
-pub(crate) struct ParentModuleResetForBinding;
-
-#[derive(Diagnostic)]
-#[diag(resolve_ampersand_used_without_explicit_lifetime_name, code = E0637)]
-#[note]
-pub(crate) struct AmpersandUsedWithoutExplicitLifetimeName(#[primary_span] pub(crate) Span);
-
-#[derive(Diagnostic)]
-#[diag(resolve_underscore_lifetime_name_cannot_be_used_here, code = E0637)]
-#[note]
-pub(crate) struct UnderscoreLifetimeNameCannotBeUsedHere(#[primary_span] pub(crate) Span);
-
-#[derive(Diagnostic)]
-#[diag(resolve_crate_may_not_be_imported)]
-pub(crate) struct CrateMayNotBeImported(#[primary_span] pub(crate) Span);
-
-#[derive(Diagnostic)]
-#[diag(resolve_crate_root_imports_must_be_named_explicitly)]
-pub(crate) struct CrateRootNamesMustBeNamedExplicitly(#[primary_span] pub(crate) Span);
-
-#[derive(Diagnostic)]
-#[diag(resolve_crate_root_imports_must_be_named_explicitly)]
-pub(crate) struct ResolutionError(#[primary_span] pub(crate) Span);
-
 #[derive(Diagnostic)]
 #[diag(resolve_generic_params_from_outer_item, code = E0401)]
 pub(crate) struct GenericParamsFromOuterItem {
@@ -467,19 +441,6 @@ pub(crate) struct UnreachableLabelSubLabelUnreachable {
     pub(crate) ident_span: Span,
 }
 
-#[derive(Diagnostic)]
-#[diag(resolve_trait_impl_mismatch)]
-pub(crate) struct TraitImplMismatch {
-    #[primary_span]
-    #[label]
-    pub(crate) span: Span,
-    pub(crate) name: Symbol,
-    pub(crate) kind: String,
-    #[label(resolve_label_trait_item)]
-    pub(crate) trait_item_span: Span,
-    pub(crate) trait_path: String,
-}
-
 #[derive(Diagnostic)]
 #[diag(resolve_invalid_asm_sym)]
 #[help]