I wouldn't remove it the first time it came on, but if it doesn't go out in a week or two it's very unlikely it's gonna disappear (if you've already tried disconnecting the battery to reset the computer etc). And honestly, if it goes out, so what? That's a good thing isn't it? So if the bulb was out of the cluster and it fixes itself, well good, now you have ABS, but if it malfunctions again, no light. You should always drive prepared anyways IMO. If you change your driving habits when the light goes off because you think you don't have ABS anymore, I'd think your driving safer to begin with.