Move bezier functions

Move ImplSubdivideBezier(Polygon) to Polygon as a static function.
Move ImplSubdivideBezier(PolyPolygon) to PolyPolygon as a static function.

Change-Id: I0d006a8a2d3a8d9ba1aec913ceecb38507e4dd2f
Remove commented out code in polyline.cxx

Change-Id: I400d38ccb2e87c6435bc767c13a52beb62baa435
No need for vcl/source/outdev/bezier.cxx any more

Change-Id: Ie3c401b5f40972999f45da7d2c4b8ed732454af0