Fixed issue #971. Group operation do not work with VCubicBezierPath.

(grafted from 9981e18a57078493856549209156b9919e635673)

--HG--
branch : develop

ChangeLog.txt

@@ -45,6 +45,7 @@
 - [#966] Unable to control Approximation scale for arc with length.
 - [#967] Variable must not include new line character.
 - German translation for Inno setup script.
+- [#971] Group operation do not work with VCubicBezierPath.
 
 # Version 0.6.1 October 23, 2018
 - [#885] Regression. Broken support for multi size measurements.

src/libs/vgeometry/vcubicbezierpath.cpp

@@ -146,11 +146,6 @@ const VPointF &VCubicBezierPath::at(int indx) const
 //---------------------------------------------------------------------------------------------------------------------
 void VCubicBezierPath::append(const VPointF &point)
 {
-    if (d->path.size() > 0 && static_cast<QPointF>(d->path.last()) != static_cast<QPointF>(point))
-    {
-        return;
-    }
-
     d->path.append(point);
     CreateName();
 }