TIMOB-14918: Clean up static overlayProxy only during finish().  Orientation changes tear down the activity, and during the re-creation, we want to make sure the overlayProxy is available.
TIMOB-14918: Removed unused code
Merge pull request #4595 from ayeung/timob-14918-3_1_X

Timob 14918 3 1 x: Changing orientation with camera overlay causes app to crash