Code cleanup: remove unused classes

Matthew Swift

12.48.2013 ded5a449521ff85c2a05fb6e95e7d2b5a00c2647

opendj-sdk/opends/src/server/org/opends/server/backends/jeb/IndexModComparator.java does not exist in tree 07412b8f3ceb9e1f9f2fe6468a9e7014dbda9ed3