wip(adapters): drop broken visitor assertion from chain test (crashed session residue)

src/adapters/openapi_spec.rs

@@ -868,18 +868,15 @@ mod tests {
             .get("S0")
             .expect("test schema present")
             .clone();
-        let visited = std::cell::Cell::new(0u64);
         let start = std::time::Instant::now();
         let resolved = spec
             .resolve_refs_recursive(&schema)
             .expect("acyclic shared chain resolves");
         let elapsed = start.elapsed();
-        visited.set(visited.get());
         assert!(
             elapsed.as_secs_f64() < 1.0,
             "30+ level shared chain must import in < 1 s, took {elapsed:?}"
         );
-        assert!(visited.get() == 0);
         let a = &resolved["a"];
         assert_eq!(a["a"]["a"]["type"], "string");
         for side in ["a", "b"] {