Revert "Rewrite of isNotOldPeer predicate, to fix logic issue."

This reverts commit d81071f254.

src/main/java/org/qortal/network/Network.java

@@ -1373,26 +1373,17 @@ public class Network {
                 // We attempted to connect within the last day
                 // but we last managed to connect over a week ago.
                 Predicate<PeerData> isNotOldPeer = peerData -> {
-
-                    // First check if there was a connection attempt within the last day
                     if (peerData.getLastAttempted() == null
                             || peerData.getLastAttempted() < now - OLD_PEER_ATTEMPTED_PERIOD) {
+                        return true;
+                    }
 
-                        // There was, so now check if we had a successful connection in the last 7 days
                     if (peerData.getLastConnected() == null
                             || peerData.getLastConnected() > now - OLD_PEER_CONNECTION_PERIOD) {
-
-                            // We did, so this is NOT an 'old' peer
                         return true;
                     }
 
-                        // Last successful connection was more than 1 week ago - this is an 'old' peer
                     return false;
-                    }
-                    else {
-                        // Best to wait until we have a connection attempt - assume not an 'old' peer until then
-                        return true;
-                    }
                 };
 
                 // Disregard peers that are NOT 'old'