remove unrelated test

Author: molpopgen

src/trees.rs

@@ -1147,24 +1147,4 @@ pub(crate) mod test_trees {
         stops_rev.reverse();
         assert!(stops_fwd == stops_rev);
     }
-
-    #[should_panic]
-    #[test]
-    fn test_array_lifetime() {
-        let treeseq = treeseq_from_small_table_collection_two_trees();
-        let mut tree_iter = treeseq.tree_iterator(TreeFlags::default()).unwrap();
-        if let Some(tree) = tree_iter.next() {
-            let pa = tree.parent_array();
-            let mut pc = vec![];
-            for i in pa.iter() {
-                pc.push(i);
-            }
-            drop(tree_iter);
-            for (i, p) in pc.iter().enumerate() {
-                assert_eq!(pa[i as tsk_id_t], *p);
-            }
-        } else {
-            panic!("Expected a tree.");
-        }
-    }
 }