Can I safely remove an old MacBook Air serial number from my device list after replacing the motherboard?

To get more power and storage I replaced my macbook air motherbaord. Now my device list includes the old serial number and the new serial number device. Both are registered with Apple. I know I can always check which is which by looking at my settings but I'd rather have the old one offf my device list. I didnt purchase a warranty or service plan. Ok to delete the old serial number from my device list?

[Re-Titled by Moderator]