Fix OPENDJ-324: Remove NDB backend implementation

Matthew Swift

19.26.2011 83d2ab7fe030fb9fa161527ecb16ce488de6b0a5

opendj-sdk/opends/src/admin/defn/org/opends/server/admin/std/NdbIndexConfiguration.xml does not exist in tree 1f27a4ba33bcfd2d2d23f7d3562b52e45ed527ca