It didn't really hit me until I saw this post about it, but there are no sharpening stones, weightstones, or mana or wizard oils in Wrath of the Lich King. Verimonde, a blue name that's unfamiliar to me, confirms that this is by design, saying "While they were something nice to use once in a while for most people for many raid guilds they were simply another burden to the cost of raiding." This is essentially my reaction to the change, although some other Insiders are of the opinion that it's another step in the oversimplification of WoW. I'm happy that typical raid consumables will be down to flasks and food.
There's another problem with this plan, though. Unless they remove the current stones and oils, progression-oriented raiders are going to be running back to Outland and farming up the mats for old stones and oils all the time. This is nothing new really; dedicated raiders have been going to great lengths for buffs since the days of mind-controlling fire resistance off UBRS mobs to go to MC and BWL. Still, I don't think it's what Blizz had in mind in removing them, so my bet is that old stones/oils will either be removed, or prevented from working on players over level 70 (like the Riding Crop).
Update: Looks like they went the latter route. Stones/oils will not work on post-70 items.