Revert "correctly parse bezier curve seperators."

This reverts commit ff57a88eb7.

src/Avalonia.Visuals/Media/PathMarkupParser.cs

@@ -126,9 +126,7 @@ namespace Avalonia.Media
                         case Command.CubicBezierCurve:
                             {
                                 Point point1 = ReadPoint(reader, point, relative);
-                                ReadSeparator(reader);
                                 Point point2 = ReadPoint(reader, point, relative);
-                                ReadSeparator(reader);
                                 point = ReadPoint(reader, point, relative);
                                 _context.CubicBezierTo(point1, point2, point);
                                 break;