Haha! Yes, it can be easily hidden with customized CSS. I'm pretty happy, though I do still wish that you could change the wording of the button, from the rather awkward 'claim access'.
Here's what it looked like before (outlined in red
And here's what it looks like now!
If someone googles, trying to do this too, and isn't capable with css, here's the style:
.reward_summary{
display:none;
}
.rewards h2{
display:none;
}
-E @ Fractured Mind