!6331 Delete the useless code in graph runner

Merge pull request !6331 from chenhaozhe/delete-useless-code-master

mindspore/ccsrc/transform/graph_ir/graph_runner.cc

@@ -141,13 +141,6 @@ Status GraphRunner::RunGraph(const RunOptions &options, const std::vector<GeTens
     return Status::FAILED;
   }
 
-  // The information of some nodes could be changed after fusion in some cases
-  // Therefore a graph needs to be rebuilt in above situation
-  if (sess_->IsGraphNeedRebuild(wrap_ptr->id_)) {
-    sess_->RemoveGraph(wrap_ptr->id_);
-    sess_->AddGraph(wrap_ptr->id_, *(wrap_ptr->graph_ptr_), wrap_ptr->options_);
-  }
-
   ge::Status ret = sess_->RunGraph(wrap_ptr->id_, ge_inputs, ge_outputs);
   if (ret != ge::GRAPH_SUCCESS) {
     MS_LOG(ERROR) << "Call GE RunGraph Failed, ret is: " << ret;