[Part] SectionCutting: remove another unused variable

strangely MSVC did not report me these, the CI does

src/Mod/Part/Gui/SectionCutting.cpp

@@ -72,7 +72,7 @@ enum Refresh : bool
     ZRange = true
 };
 
-SectionCut::SectionCut(Gui::View3DInventor* view, QWidget* parent)
+SectionCut::SectionCut(QWidget* parent)
     : QDialog(parent)
     , ui(new Ui_SectionCut)
 {

src/Mod/Part/Gui/SectionCutting.h

@@ -38,7 +38,7 @@ class SectionCut : public QDialog
 
 public:
     static SectionCut* makeDockWidget(Gui::View3DInventor*);
-    SectionCut(Gui::View3DInventor* view, QWidget* parent = nullptr);
+    SectionCut(QWidget* parent = nullptr);
     ~SectionCut();
 
 protected Q_SLOTS: