rm empty_tensor inputs for merge

ge/graph/passes/merge_pass.cc

@@ -213,7 +213,7 @@ bool MergePass::IsMergeInputNeedOptimized(NodePtr &node) const {
   return true;
 }
 
-Status MergePass::OptimizeEmptyTensorInput(const NodePtr &node) const {
+Status MergePass::OptimizeEmptyTensorInput(const NodePtr &node) {
   for (const auto &in_data_anchor : node->GetAllInDataAnchors()) {
     const auto &peer_data_anchor = in_data_anchor->GetPeerOutAnchor();
     if (peer_data_anchor == nullptr) {

ge/graph/passes/merge_pass.h

@@ -29,7 +29,7 @@ class MergePass : public BaseNodePass {
   Status ChangeIndexToConstant(NodePtr &node, int &value_index);
   Status CreateConstByValue(NodePtr &node, int value_index, OpDescPtr &op_desc);
   bool IsMergeInputNeedOptimized(NodePtr &node) const;
-  static Status OptimizeEmptyTensorInput(const NodePtr &node) const;
+  static Status OptimizeEmptyTensorInput(const NodePtr &node);
 };
 }  // namespace ge
 #endif  // GE_GRAPH_PASSES_MERGE_PASS_H_