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CQCL · Mar 19, 2024 · 3c6a558 · 3c6a558
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diff --git a/quantinuum-hugr/src/hugr/rewrite.rs b/quantinuum-hugr/src/hugr/rewrite.rs
@@ -43,8 +43,6 @@ pub trait Rewrite {
     ///
     /// Two `impl Rewrite`s can be composed if their invalidation sets are
     /// disjoint.
-    /// Using this way instead is to avoid associated type
-    /// but requires 1.75 and can break impl Rewrite in other repos
     fn invalidation_set(&self) -> impl Iterator<Item = Node>;
 }
 

diff --git a/quantinuum-hugr/src/hugr/rewrite/simple_replace.rs b/quantinuum-hugr/src/hugr/rewrite/simple_replace.rs
@@ -53,14 +53,6 @@ impl SimpleReplacement {
     }
 }
 
-/*
-type SubgraphNodesIter<'a> = Copied<slice::Iter<'a, Node>>;
-type NuOutNodesIter<'a> = iter::Map<
-    hash_map::Keys<'a, (Node, IncomingPort), IncomingPort>,
-    fn(&'a (Node, IncomingPort)) -> Node,
->;
-*/
-
 impl Rewrite for SimpleReplacement {
     type Error = SimpleReplacementError;
     type ApplyResult = ();