rm unused capture

GUI/View/Sample/HeinzFormLayout.cpp

@@ -122,7 +122,7 @@ void HeinzFormLayout::addValue(DoubleProperty& d, std::function<void(double)> on
 
 void HeinzFormLayout::insertValue(int row, DoubleProperty& d)
 {
-    insertValue(row, d, [ec = m_ec, &d](double val) {
+    insertValue(row, d, [&d](double val) {
         d.setDVal(val);
         emit gDoc->sampleChanged();
     });