Removing conflicting declarations, they are not needed anymore,

and SER failed to compile because of them.

globals.h

@@ -85,12 +85,6 @@ extern int tcp_send_timeout;
 extern int tcp_con_lifetime; /* connection lifetime */
 extern enum poll_types tcp_poll_method;
 extern int tcp_max_connections;
-extern int tcp_use_source_ipv4;
-extern struct sockaddr_in tcp_source_ipv4;
-#ifdef USE_IPV6
-extern int tcp_use_source_ipv6;
-extern struct sockaddr_in6 tcp_source_ipv6;
-#endif
 #endif
 #ifdef USE_TLS
 extern int tls_disable;