Yank potentially costly support for TTL out of UdpSocket since we dont use this anymore.

node/UdpSocket.cpp

@@ -64,33 +64,20 @@ UdpSocket::~UdpSocket()
 }
 
 bool UdpSocket::send(const InetAddress &to,const void *msg,unsigned int msglen)
-{
-	return sendWithHopLimit(to,msg,msglen,0);
-}
-
-bool UdpSocket::sendWithHopLimit(const InetAddress &to,const void *msg,unsigned int msglen,int hopLimit)
 {
 #ifdef ZT_BREAK_UDP
 	return true;
 #else
-	if (hopLimit <= 0)
-		hopLimit = 255;
 	if (to.isV6()) {
 #ifdef __WINDOWS__
-		DWORD hltmp = (DWORD)hopLimit;
-		setsockopt(_sock,IPPROTO_IPV6,IPV6_UNICAST_HOPS,(const char *)&hltmp,sizeof(hltmp));
 		return ((int)sendto(_sock,(const char *)msg,msglen,0,to.saddr(),to.saddrLen()) == (int)msglen);
 #else
-		setsockopt(_sock,IPPROTO_IPV6,IPV6_UNICAST_HOPS,&hopLimit,sizeof(hopLimit));
 		return ((int)sendto(_sock,msg,msglen,0,to.saddr(),to.saddrLen()) == (int)msglen);
 #endif
 	} else {
 #ifdef __WINDOWS__
-		DWORD hltmp = (DWORD)hopLimit;
-		setsockopt(_sock,IPPROTO_IP,IP_TTL,(const char *)&hltmp,sizeof(hltmp));
 		return ((int)sendto(_sock,(const char *)msg,msglen,0,to.saddr(),to.saddrLen()) == (int)msglen);
 #else
-		setsockopt(_sock,IPPROTO_IP,IP_TTL,&hopLimit,sizeof(hopLimit));
 		return ((int)sendto(_sock,msg,msglen,0,to.saddr(),to.saddrLen()) == (int)msglen);
 #endif
 	}

node/UdpSocket.hpp

@@ -46,17 +46,6 @@ public:
 	virtual ~UdpSocket();
 	virtual bool send(const InetAddress &to,const void *msg,unsigned int msglen);
 
-	/**
-	 * Send UDP packet with IP max hops set (<= 0 for default/infinite)
-	 *
-	 * @param to Destination address
-	 * @param msg Message data
-	 * @param msglen Message length
-	 * @param hopLimit IP TTL / max hops
-	 * @return True if packet appears sent
-	 */
-	bool sendWithHopLimit(const InetAddress &to,const void *msg,unsigned int msglen,int hopLimit);
-
 protected:
 #ifdef __WINDOWS__
 	UdpSocket(Type t,SOCKET s) :