Cleanup associated with rev 1236718

Removed unused structure tree events.


git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/Temp_ImproveAccessibility@1238313 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/fop/accessibility/DummyStructureTreeEventHandler.java

         return null;
     }
 
-    public void endImageNode(String name) {
-    }
-
     public StructureTreeElement startReferencedNode(String name, Attributes attributes) {
         return null;
     }
 
-    public void endReferencedNode(String name) {
-    }
-
 }

src/java/org/apache/fop/accessibility/StructureTree2SAXEventAdapter.java

         return startNode(name, attributes);
     }
 
-    public void endImageNode(String name) {
-        endNode(name);
-    }
-
     public StructureTreeElement startReferencedNode(String name, Attributes attributes) {
         return startNode(name, attributes);
     }
 
-    public void endReferencedNode(String name) {
-        endNode(name);
-    }
 }

src/java/org/apache/fop/render/pdf/PDFStructureTreeBuilder.java

         return created;
     }
 
-    public void endImageNode(String name) {
-        removeFirstAncestor();
-    }
-
     public StructureTreeElement startReferencedNode(String name, Attributes attributes) {
         PDFStructElem parent = ancestors.getFirst();
         String role = attributes.getValue("role");
         return created;
     }
 
-    public void endReferencedNode(String name) {
-        removeFirstAncestor();
-    }
-
 }