How do I remove notifications from self auto approve?

Is there a way to remove notifications for approval flows that ends with self auto approval, especially within change salary in HCM?

We have a complex approval set up for "manage salary" conditions with up to 6 levels of participants and multiple rules. Some of these rules only demand 3-4 levels of approval while other 5-6. Those ending with less than 6 levels have Self-auto-approval at the final participant levels. Since the flows are already ended, we do not want to send notifications on these self auto approval levels.