message: tracking: Remove log message in inner loop
  This will help with the immediate pain of but doesn't completely
  resolve it.
diff: @@ -284,7 +284,6 @@ impl PacketRange {
  /// Requires that other is equal to this, or a larger range.
  pub fn acknowledged(&mut self, other: &Self) {
  if (other.smallest <= self.smallest) && (other.largest >= self.largest) {
  - qinfo!([self], "Acknowledged");
  self.ack_needed = false;
  }
  }
  