drop obsolete class

Change-Id: Ia3485961f2d0a610ae7be6ab82446e89fab70b1f

svx/inc/svx/svdobj.hxx

@@ -339,24 +339,6 @@ public:
     SdrObjTransformInfoRec();
 };
 
-////////////////////////////////////////////////////////////////////////////////////////////////////
-// To make things more safe, allow users of the object to register at it. The users need to be derived
-// from SdrObjectUser to get a call. The users do not need to call RemoveObjectUser() at the object
-// when they get called from PageInDestruction().
-class SdrObject;
-
-class SdrObjectUser
-{
-public:
-    virtual void ObjectInDestruction(const SdrObject& rObject) = 0;
-
-protected:
-    ~SdrObjectUser() {}
-};
-
-// typedef for GetParentContacts()
-typedef ::std::vector< SdrObjectUser* > ObjectUserVector;
-
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 //