Remove old diagnostic notes for type ascription syntax

Type ascription syntax was removed in 2023.

1 files changed, 1 insertions, 4 deletions

diff --git a/compiler/rustc_parse/src/parser/diagnostics.rs b/compiler/rustc_parse/src/parser/diagnostics.rs
index a4978b5a0fe..b6945c6f7db 100644
--- a/compiler/rustc_parse/src/parser/diagnostics.rs
+++ b/compiler/rustc_parse/src/parser/diagnostics.rs
@@ -1943,10 +1943,7 @@ impl<'a> Parser<'a> {
             && self.token == token::Colon
             && self.look_ahead(1, |next| line_idx(self.token.span) < line_idx(next.span))
         {
-            self.dcx().emit_err(ColonAsSemi {
-                span: self.token.span,
-                type_ascription: self.psess.unstable_features.is_nightly_build(),
-            });
+            self.dcx().emit_err(ColonAsSemi { span: self.token.span });
             self.bump();
             return true;
         }