simplified setting of additional configuration in the worker process

src/worker.h

@@ -140,19 +140,9 @@ typedef struct worker_st {
 	int tun_fd;
 	
 	/* additional data - received per user or per group */
-	char *ipv4_dns;
-	char *ipv6_dns;
-	char *ipv4_nbns;
-	char *ipv6_nbns;
-	char *ipv4_netmask;
-	char *ipv6_netmask;
 	unsigned routes_size;
 	char* routes[MAX_ROUTES];
 	
-	size_t rx_per_sec;
-	size_t tx_per_sec;
-	unsigned net_priority;
-	
 	struct http_req_st req;
 } worker_st;