Remove `HasSpan` trait.

The only place it is meaningfully used is in a panic message in
`TokenStream::from_ast`. But `node.span()` doesn't need to be printed
because `node` is also printed and it must contain the span.

1 files changed, 3 insertions, 3 deletions

diff --git a/compiler/rustc_ast/src/tokenstream.rs b/compiler/rustc_ast/src/tokenstream.rs
index 06a669e7957..a84e33e5f92 100644
--- a/compiler/rustc_ast/src/tokenstream.rs
+++ b/compiler/rustc_ast/src/tokenstream.rs
@@ -14,7 +14,7 @@
 //! ownership of the original.
 
 use crate::ast::{AttrStyle, StmtKind};
-use crate::ast_traits::{HasAttrs, HasSpan, HasTokens};
+use crate::ast_traits::{HasAttrs, HasTokens};
 use crate::token::{self, Delimiter, Nonterminal, Token, TokenKind};
 use crate::AttrVec;
 
@@ -436,9 +436,9 @@ impl TokenStream {
         TokenStream::new(vec![TokenTree::token_alone(kind, span)])
     }
 
-    pub fn from_ast(node: &(impl HasAttrs + HasSpan + HasTokens + fmt::Debug)) -> TokenStream {
+    pub fn from_ast(node: &(impl HasAttrs + HasTokens + fmt::Debug)) -> TokenStream {
         let Some(tokens) = node.tokens() else {
-            panic!("missing tokens for node at {:?}: {:?}", node.span(), node);
+            panic!("missing tokens for node: {:?}", node);
         };
         let attrs = node.attrs();
         let attr_stream = if attrs.is_empty() {