class ViewDescriptor is unused

since

    commit 990691b144c1292f0263e0a8b8704b0ccbd7a168
    Date:   Mon Nov 23 09:58:38 2015 +0200
    loplugin:unusedfields in sdext/

Change-Id: I89b7e59d37af8ba4093ca2e941219b29fd7bd726
diff --git a/sdext/source/presenter/PresenterTheme.cxx b/sdext/source/presenter/PresenterTheme.cxx
index 02af8b8..a2f8f25 100644
--- a/sdext/source/presenter/PresenterTheme.cxx
+++ b/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: