netdb minor cleanups

...net/i2p/router/networkdb/kademlia/FloodOnlySearchJob.java

...orkdb/kademlia/FloodfillDatabaseLookupMessageHandler.java

...2p/router/networkdb/kademlia/FloodfillVerifyStoreJob.java

...ter/networkdb/kademlia/KademliaNetworkDatabaseFacade.java

...rc/net/i2p/router/networkdb/kademlia/LookupThrottler.java

...a/src/net/i2p/router/networkdb/kademlia/PeerSelector.java

...et/i2p/router/networkdb/kademlia/PersistentDataStore.java

...t/i2p/router/networkdb/kademlia/RepublishLeaseSetJob.java

...java/src/net/i2p/router/networkdb/kademlia/SearchJob.java

...src/net/i2p/router/networkdb/kademlia/SearchReplyJob.java

.../java/src/net/i2p/router/networkdb/kademlia/StoreJob.java