Remove ExpnKind::Inlined.

compiler/rustc_errors/src/emitter.rs

@@ -332,7 +332,7 @@ pub trait Emitter: Translate {
 
                     // Skip past non-macro entries, just in case there
                     // are some which do actually involve macros.
-                    ExpnKind::Inlined | ExpnKind::Desugaring(..) | ExpnKind::AstPass(..) => None,
+                    ExpnKind::Desugaring(..) | ExpnKind::AstPass(..) => None,
 
                     ExpnKind::Macro(macro_kind, name) => Some((macro_kind, name)),
                 }
@@ -403,7 +403,7 @@ pub trait Emitter: Translate {
                     continue;
                 }
 
-                if always_backtrace && !matches!(trace.kind, ExpnKind::Inlined) {
+                if always_backtrace {
                     new_labels.push((
                         trace.def_site,
                         format!(
@@ -442,7 +442,6 @@ pub trait Emitter: Translate {
                             "this derive macro expansion".into()
                         }
                         ExpnKind::Macro(MacroKind::Bang, _) => "this macro invocation".into(),
-                        ExpnKind::Inlined => "this inlined function call".into(),
                         ExpnKind::Root => "the crate root".into(),
                         ExpnKind::AstPass(kind) => kind.descr().into(),
                         ExpnKind::Desugaring(kind) => {