Revert "Fix flickering when transform snapping in edit mode and cursor is"

Looks like the cleanest way to handle this is to no do bounding box collision
for edit mode at all. But this is easy to enforce

This reverts commit 7b5fe4f316.

Conflicts:
	source/blender/editors/transform/transform_snap.c

source/blender/makesrna/intern/rna_scene_api.c

@@ -126,7 +126,7 @@ static void rna_Scene_ray_cast(Scene *scene, float ray_start[3], float ray_end[3
 	if (snapObjectsRayEx(scene, NULL, NULL, NULL, NULL, SCE_SNAP_MODE_FACE,
 	                     r_ob, (float(*)[4])r_obmat,
 	                     ray_start, ray_nor, &ray_dist,
-	                     NULL, &dummy_dist_px, r_location, r_normal, SNAP_ALL, NULL))
+	                     NULL, &dummy_dist_px, r_location, r_normal, SNAP_ALL))
 	{
 		*r_success = true;
 	}