Remove unused method and de-virtualize others in Element.h

The de-virtualization possibilities were noted whilst "FINALizing" the Node
hierarchy. If a method is successfully marked FINAL but then fails when marked
OVERRIDE as well, the method by definition does not need to be virtual.

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git-svn-id: svn:// bbb929c8-8fbe-4397-9dbb-9b2b20218538
1 file changed