The thing is, taking away something that provides limited and often incorrect or variable data isn't going to change actual battery life, but it will stop people from saying there is something wrong when my computer says it has 9 hours of battery one minute, then shows 7 hours 15 minutes later (mostly because they've been streaming a video or up/downloading something that's effecting battery life at that particular point in time.
Just like with the iPhone, if Apple provided estimated battery life (in time), people would be totally freaking out all the time, because battery life will go down when there is poor cellular or wifi reception, or when screen brightness is adjusted high, or, or, or. What really matters is whether you can get through the day on battery power, be it on a MacBook, iPhone or iPad.
The best way to solve the worry about battery life, is to buy an iMac.
I dont think people are demanding refunds or replacement of parts over a fluctuating battery ESTIMATE, come on,