Remove some code temporary code using the multicast socket options that was

accidentally left in.

asio/src/examples/multicast/receiver.cpp

@@ -19,7 +19,6 @@ public:
 
     // Join the multicast group.
     socket_.set_option(asio::ipv4::multicast::add_membership(multicast_addr));
-    socket_.set_option(asio::ipv4::multicast::drop_membership(multicast_addr));
 
     socket_.async_recvfrom(data_, max_length, sender_endpoint_,
         boost::bind(&receiver::handle_recvfrom, this, asio::arg::error,

asio/src/examples/multicast/sender.cpp

@@ -16,9 +16,6 @@ public:
       timer_(d),
       message_count_(0)
   {
-    // Set the time-to-live for outgoing multicast packets.
-    socket_.set_option(asio::ipv4::multicast::time_to_live(2));
-
     std::ostringstream os;
     os << "Message " << message_count_++;
     message_ = os.str();