tests: clean up more tests across the project

crates/irtt-stats/src/ipdv.rs

@@ -204,15 +204,6 @@ mod tests {
         );
     }
 
-    #[test]
-    fn ipdv_tracker_duplicate_sequence_does_not_emit_pair_again() {
-        let mut tracker = IpdvTracker::new(None);
-        assert!(tracker.insert(ipdv_sample(0, 10)).is_empty());
-        assert_eq!(tracker.insert(ipdv_sample(1, 14)).len(), 1);
-
-        assert!(tracker.insert(ipdv_sample(1, 18)).is_empty());
-    }
-
     #[test]
     fn ipdv_tracker_bounded_mode_limits_sequence_state() {
         let limit = 4;