class ViewDescriptor is unused

since

    commit 990691b1
    Date:   Mon Nov 23 09:58:38 2015 +0200
    loplugin:unusedfields in sdext/

Change-Id: I89b7e59d37af8ba4093ca2e941219b29fd7bd726

sdext/source/presenter/PresenterTheme.cxx

@@ -195,12 +195,6 @@ private:
         const Reference<beans::XPropertySet>& rxProperties);
 };
 
-class ViewDescriptor
-{
-};
-typedef std::shared_ptr<ViewDescriptor> SharedViewDescriptor;
-typedef ::std::vector<SharedViewDescriptor> ViewDescriptorContainer;
-
 class StyleAssociationContainer
 {
 public: