These times are the remains of the individual levels leaderboards on https://www.speedrun.com/lcgol which has since been removed.
Most of these runs were done with recordings that are no longer available and the vast majority were simply taken from the game's in-game leaderboard, which has been proven to be unreliable and inaccurate and as such is no longer considered.
For quite a while now Joel and I have been wanting to move away from RTA to make things more fair between runners (at least on PC), as loads are a huge part of the run and they are highly inconsistent.
SuicideMachine has put together a noloads script and this is now available in the splits editor for LiveSplit. Just click Activate and change your comparison from Real Time to Game Time and you are good to go:
EDIT: So for whatever reason the load remover only works for the Steam version of the game.