ufo: don't drop single points in GetSegmentsPen
ufo: don't drop single points in GetSegmentsPen

We dropped robofab support. There is no reason to arbitrarily
drop any contour points. Anchors are handled as anchors in
latest ufoLib+defcon, also for UFO2. No more need to special-case.

fonttools/fonttools,googlei18n/cu2qu,googlefonts/fonttools,googlefonts/cu2qu