How to get rid of remnants of a user profile in /var/folders?

I created a user, TestUser1, via System Preferences > Users and Groups on 22 April 2021, deleted it, didn't let it create a backup (since it was a test profile), but I noticed in /var/folders possible remnants of it.

This is on Catalina 10.15.7, 2020 Macbook Pro.

Would disabling SIP temporarily and/or sudo'ing to remove the files be a way to get rid of this?

I'm not sure what to do about this, and how to, in future, deal with remnants of user accounts created.

Solution 1:

"I'm not sure what to do about this"

My overwhelming instinct is to leave it alone. There's no personal data there, and it's not taking up significant space. The OS will probably tidy it up at some point.
There's a very very tiny possibility that the OS may actually need these files for something and get confused if they're not there.

Yes, you probably could find a way to delete the files manually; -- or you could do something useful with your time instead! IMO, the less maintenance I have to do, the better.