Fix/hide legend in some examples and demos

demos/dynamicspline/main.cpp

@@ -31,6 +31,7 @@ int main(int argc, char *argv[])
     QMainWindow window;
     Chart *chart = new Chart;
     chart->setTitle("Dynamic spline chart");
+    chart->legend()->hide();
     chart->setAnimationOptions(QChart::AllAnimations);
     QChartView chartView(chart);
     chartView.setRenderHint(QPainter::Antialiasing);

examples/customchart/main.cpp

@@ -31,9 +31,9 @@ int main(int argc, char *argv[])
 
 //![1]
     QLineSeries* series = new QLineSeries();
-    series->setName("line");
     *series << QPointF(0, 6) << QPointF(2, 4) << QPointF(3, 8) << QPointF(7, 4) << QPointF(10,5);
     QChart* chart = new QChart();
+    chart->legend()->hide();
     chart->addSeries(series);
 //![1]
 

examples/linechart/main.cpp

@@ -31,7 +31,6 @@ int main(int argc, char *argv[])
 
 //![1]
     QLineSeries* series = new QLineSeries();
-    series->setName("line");
 //![1]
 
 //![2]
@@ -45,6 +44,7 @@ int main(int argc, char *argv[])
 
 //![3]
     QChart* chart = new QChart();
+    chart->legend()->hide();
     chart->addSeries(series);
     chart->setTitle("Simple line chart example");
 //![3]

examples/modeldata/tablewidget.cpp

@@ -55,6 +55,7 @@ TableWidget::TableWidget(QWidget *parent)
     // series 1
     //! [4]
     QLineSeries *series = new QLineSeries;
+    series->setName("Line 1");
     QVXYModelMapper *mapper = new QVXYModelMapper(this);
     mapper->setXColumn(0);
     mapper->setYColumn(1);
@@ -76,6 +77,7 @@ TableWidget::TableWidget(QWidget *parent)
     // series 2
     //! [6]
     series = new QLineSeries;
+    series->setName("Line 2");
 
     mapper = new QVXYModelMapper(this);
     mapper->setXColumn(2);

examples/splinechart/main.cpp

@@ -45,6 +45,7 @@ int main(int argc, char *argv[])
 
     //![3]
     QChart* chart = new QChart();
+    chart->legend()->hide();
     chart->addSeries(series);
     chart->setTitle("Simple spline chart example");
     chart->axisY()->setRange(0, 10);