Not saying I like it, but I can think of one reason why they might have removed it. As in actual real world golf, you can't stand anywhere on the putting green where you may be looking straight down your opponents putting line. And the thing about reverse view is, you're looking at a close up of the hole, so you can see how the ball breaks right at the hole, ahead of time.
I know, I know ... you're still looking down your opponents putting line from the forward view ...
But it's probably just a glitch (no reverse view)