Revert "removed (0,0) keypoints in removeEdges"
Revert "removed (0,0) keypoints in removeEdges"

This reverts commit c7a877441a2c0b9fd3f7c9b5b9c3319d7a4d8a7d.

mangostaniko/ebv14-sift-image-stitching,mangostaniko/ebvb4,mangostaniko/ebv14-sift-image-stitching,mangostaniko/ebvb4