Doc: Fix auto-links to deprecated functions

Change-Id: Id4456eef3440734add2d804d186966e253335b7c
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

examples/widgets/doc/src/basicdrawing.qdoc

@@ -171,7 +171,7 @@
     The QComboBox::itemData() function returns the data as a QVariant,
     so we need to cast the data to \c RenderArea::Shape. If there is
     no data for the given role, the function returns
-    QVariant::Invalid.
+    QMetaType::UnknownType.
 
     In the end we call the \c RenderArea::setShape() slot to update
     the \c RenderArea widget.

src/widgets/graphicsview/qgraphicsview.cpp

@@ -2214,7 +2214,7 @@ QList<QGraphicsItem *> QGraphicsView::items() const
 
     This function is most commonly called from within mouse event handlers in
     a subclass in QGraphicsView. \a pos is in untransformed viewport
-    coordinates, just like QMouseEvent::pos().
+    coordinates, just like QMouseEvent::position().
 
     \snippet code/src_gui_graphicsview_qgraphicsview.cpp 5
 

src/widgets/kernel/qapplication.cpp

@@ -238,8 +238,7 @@ void QApplicationPrivate::createEventDispatcher()
             palette(),
             setPalette(),
             font(),
-            setFont(),
-            fontMetrics().
+            setFont().
 
         \row
         \li  Event handling

src/widgets/kernel/qwidget.cpp

@@ -9496,14 +9496,14 @@ void QWidget::changeEvent(QEvent * event)
     tracking is switched on, mouse move events occur even if no mouse
     button is pressed.
 
-    QMouseEvent::pos() reports the position of the mouse cursor,
+    QMouseEvent::position() reports the position of the mouse cursor,
     relative to this widget. For press and release events, the
     position is usually the same as the position of the last mouse
     move event, but it might be different if the user's hand shakes.
     This is a feature of the underlying window system, not Qt.
 
     If you want to show a tooltip immediately, while the mouse is
-    moving (e.g., to get the mouse coordinates with QMouseEvent::pos()
+    moving (e.g., to get the mouse coordinates with QMouseEvent::position()
     and show them as a tooltip), you must first enable mouse tracking
     as described above. Then, to ensure that the tooltip is updated
     immediately, you must call QToolTip::showText() instead of