It does not really matter if it is there now or not.
It is strange that someone took the effort to remove everything, including all the pre-race facts (practice and qualifying a.o.)
And especially strange that the event itself has been removed from the schedule.
I just hope it will be restored in the future. If not the statistics then at least a mention that the event took place.
I don't care about the stats itself, but it would annoy me if the Las Vegas 2011 event would get the same treatment as the Charlotte 1999 race.
Just try to find something about Charlotte '99 on the indycar.com website (spectators were killed when a tire ended up in the grandstands and the race was halted)
1999 schedule according to indycar.com :
http://www.indycar.com/stats/boxscore/55/35593/
1999 schedule according to Wikipedia :
http://en.wikipedia.org/wiki/1999_in_IRL