Haiku: remove an #ifdef as the platform now supports MSG_NOSIGNAL

drivers/unix/stream_peer_tcp_posix.cpp

@@ -206,11 +206,7 @@ Error StreamPeerTCPPosix::write(const uint8_t* p_data,int p_bytes, int &r_sent,
 
 	while (data_to_send) {
 
-#ifdef __HAIKU__
-		int sent_amount = send(sockfd, offset, data_to_send, 0);
-#else
 		int sent_amount = send(sockfd, offset, data_to_send, MSG_NOSIGNAL);
-#endif
 		//printf("Sent TCP data of %d bytes, errno %d\n", sent_amount, errno);
 
 		if (sent_amount == -1) {