How to remove one computer from a dive

[Jaspal Sahota]

(windows)
I lent my second computer to someone for a few dives (which I was also
on) and now have it back.

I imported dives from my primary computer (which is fine) and the
secondary computer - so now I have my dive logged from my primary
computer but also the other person's dive from the secondary.

I'd like to delete the profile from the secondary (in subsurface) but
keep the profile from the primary...is there a way to do that?
Thanks.
Jas