get rif of showDropZone

src/plasma/containment.cpp

@@ -374,12 +374,6 @@ Corona *Containment::corona() const
     return qobject_cast<Corona*>(parent());
 }
 
-void Containment::showDropZone(const QPoint pos)
-{
-    Q_UNUSED(pos)
-    //Base implementation does nothing, don't put code here
-}
-
 void Containment::setFormFactor(FormFactor formFactor)
 {
     if (d->formFactor == formFactor) {

src/plasma/containment.h

@@ -322,16 +322,6 @@ class PLASMA_EXPORT Containment : public Applet
          */
         QString activity() const;
 
-        /**
-         * Shows a visual clue for drag and drop
-         * The default implementation does nothing,
-         * reimplement in containments that need it
-         *
-         * @param pos point where to show the drop target; if an invalid point is passed in
-         *        the drop zone should not be shown
-         */
-        virtual void showDropZone(const QPoint pos);
-
         /**
          * Sets a containmentactions plugin.
          *