[applet] Remove broken call to closeSearch()

This function was removed when we made the search view always visible;
there is no longer a concept of the search view being open or closed.

applet/contents/ui/PopupDialog.qml

@@ -118,7 +118,6 @@ PlasmaComponents3.Page {
                     full.connectionModel = networkModelComponent.createObject(full)
                 } else {
                     full.connectionModel.destroy()
-                    toolbar.closeSearch();
                 }
             }
         }