Temporarily disable the symmetric NAT port prediction code since the current version adds protocol overhead and probably is not that effective.

node/SelfAwareness.hpp

@@ -64,12 +64,14 @@ public:
 	 */
 	void clean(int64_t now);
 
+#if 0
 	/**
 	 * If we appear to be behind a symmetric NAT, get predictions for possible external endpoints
 	 *
 	 * @return Symmetric NAT predictions or empty vector if none
 	 */
 	std::vector<InetAddress> getSymmetricNatPredictions();
+#endif
 
 private:
 	struct PhySurfaceKey