Fix linter errors in newer version of rust.

This error pops up in CI, but not locally.

Bug: 528225104
Change-Id: Ibc87d11cda66ab5d1dff5b30c3a97ad16a6a6964
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/25000
Commit-Queue: Matt Stark <msta@google.com>
Reviewed-by: Takuto Ikuta <tikuta@google.com>

src/gn/starlark/crates/rule/src/frozen_rule.rs

diff --git a/src/gn/starlark/crates/rule/src/frozen_rule.rs b/src/gn/starlark/crates/rule/src/frozen_rule.rs
index cb9442f..ee00b07 100644
--- a/src/gn/starlark/crates/rule/src/frozen_rule.rs
+++ b/src/gn/starlark/crates/rule/src/frozen_rule.rs
@@ -141,7 +141,7 @@
 
 impl<C: EvalContextAttrExt> fmt::Display for FrozenRule<C> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "<rule: {}>", &self.name)
+        write!(f, "<rule: {}>", self.name)
     }
 }