Revert "Overlay support for legacy camera libs"

This reverts commit 69c57b87e874d53dfe1e10a6afab01d7585f5f6d.
Overlay support for legacy camera libs (correct patch)

Move http://review.cyanogenmod.com/#/c/13285/ to proper place for jellybean.

1. Rename OverlayHtc to Overlay in file names
2. Use BOARD_USES_LEGACY_OVERLAY to enable

Signed-off-by: Evan McClain <aeroevan@gmail.com>
Change-Id: Ib6afd1b610b1d3e263fcaa38585e7a1116baaf58