Cleanup: Removed unused function layerArchive

layerArchive() was created in aaaf3f072601923594754e46c1f0152847d9c2d9 with two calls.

both calls removed in de753d5a90282bec8dbefac1e5922fe6368a39f7.

Never referenced anywhere else. 

Signed-off-by: Blake Geno <blakegeno@gmail.com>