h2load: Remove Client::noop

src/h2load.cc

@@ -404,8 +404,6 @@ void Client::on_stream_close(int32_t stream_id, bool success,
   }
 }
 
-int Client::noop() { return 0; }
-
 int Client::connection_made() {
   if (ssl) {
     report_tls_info();

src/h2load.h

@@ -207,7 +207,6 @@ struct Client {
 
   int on_read(const uint8_t *data, size_t len);
   int on_write();
-  int noop();
 
   int connection_made();