Revert "Fixed OS X and iOS platforms for Leap Motion integration."

This reverts commit 26799f422db59f259704eccda391b7eb82878d2a.
Revert "Hand merging rnd branch, which is just Leap Motion support and input improvements. This will temporarily break the other platforms, which I will fix immediately."

This reverts commit 3067b33f4861f9824b0f6bc81a6f916db95275ae.