I have 178,000 miles on my wrist pins from new. I changed the pistons 97,000 miles ago in 1990 and put the original wrist pins back in. This past spring, I put in new rings and the wrist pins were still like new - at least as far as I could tell by the smooth swing they gave me. They were well lubricated and seem to work fine. They must still be okay with the 4,000 miles I've done since then.
Why do you need to remove them ?