fix: restore original source content after refactoring (accidental code changes removed)

src/routing_layer/topo_node.h

@@ -31,7 +31,6 @@ extern "C" {
 #include "secure_channel.h"
 
 struct TOPO_GROUP;
-struct TOPO_GROUPS;
 struct ETCP_SOCKET;
 struct UTUN_INSTANCE;
 
@@ -101,12 +100,9 @@ struct TOPO_CONNECTIVITY {
     uint64_t nat_probe_time;
     uint64_t real_probe_time;
     uint64_t ping_req_time;
-    uint64_t last_ping_time;   // время последнего успешного пинга (0.1ms timebase)
     void*    probe_list;
 };
 
-#define PING_TTL_TB (86400ULL * 10000ULL)  // 1 день в 0.1ms units
-
 // =======================================================================
 // Протокольные структуры (wire-format, packed, без next)
 // =======================================================================
@@ -274,9 +270,6 @@ int topo_group_update_my_nodeinfo(struct UTUN_INSTANCE* instance, struct TOPO_GR
 void topo_node_dump_all(struct TOPO_GROUP* group);
 int  topo_node_format_all(struct TOPO_GROUP* group, char* buf, size_t buf_size);
 
-int  topo_node_ping_request_cbk(struct TOPO_GROUPS* groups, uint64_t node_id);
-void topo_node_ping_update_rtt(struct TOPO_GROUPS* groups, uint64_t node_id, uint16_t rtt);
-
 #ifdef __cplusplus
 }
 #endif