Remove load_network (it was commented for 2+ years) (#8679)

Author: maximyurchuk

ydb/core/actorlib_impl/load_network.cpp

@@ -9,8 +9,6 @@ SRCS(
     defs.h
     destruct_actor.h
     http_request_protocol.h
-    load_network.cpp
-    load_network.h
     long_timer.cpp
     long_timer.h
     name_service_client_protocol.cpp

ydb/core/actorlib_impl/load_network.h

@@ -5,7 +5,6 @@
 #include "service_initializer.h"
 
 #include <ydb/core/actorlib_impl/destruct_actor.h>
-#include <ydb/core/actorlib_impl/load_network.h>
 
 #include "ydb/core/audit/audit_log_service.h"
 
@@ -771,8 +770,6 @@ void TBasicServicesInitializer::InitializeServices(NActors::TActorSystemSetup* s
             // TODO(alexvru): pool?
             setup->LocalServices.emplace_back(NInterconnect::MakeLoadResponderActorId(NodeId),
                 TActorSetupCmd(NInterconnect::CreateLoadResponderActor(), TMailboxType::ReadAsFilled, systemPoolId));
-
-            //IC_Load::InitializeService(setup, appData, maxNode);
         }
     }