Nope, they own the games they bought, so they can legally remove it. Like if you buy a game, you can legally throw out the OnLive coupon.
I guess technically they own it, although I would assume that when stores obtain products that they sell, they have to sign agreements that they won't tamper with the product before they sell it to the consumer.
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"Ahem! There is *sand* on my *boot*!"--Kefka
Black Turtle beat me, Yesmar in the Fall 2010 Guru Contest!