Line boring is not necessary unless you have changed something.

Line honing is more often done. Usually when one or more of the bores is oversize. Cut the caps to reduce the size and hone it back to spec.

It could be checked (if you really wanted to do such a thing) by going thru the motions as if you were going to line hone it (except not cut the caps) and just stroke it a few times to make sure it's straight (and to size). Now you know it's fine. Around $150