Depth pruner should check for clean depth, not raw depth
Depth pruner should check for clean depth, not raw depth

Summary: x

Reviewed By: YanNoun

Differential Revision: D28475384

fbshipit-source-id: f4569419469511d3e6914df0f1ba1fe6a0842e35

mapillary/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM