Delete unsused package - code is in replication plugin package.

Matthew Swift

24.00.2011 f7ac3d7bef49e5c868612ea343a57df7cfc537b1

opendj-sdk/opends/src/server/org/opends/server/synchronization/plugin/package-info.java does not exist in tree 739141573a392018ef31b02065bd9378a3abdc22