[Framework]Remove `op_callstack` attribute from model file #4042

lite/model_parser/compatible_pb.cc

@@ -155,9 +155,13 @@ void OpAttrsAnyToCpp(const OpDescType &any_desc, cpp::OpDesc *cpp_desc) {
   };
 
   for (const auto &attr_name : any_desc.AttrNames()) {
+    // note: since `op_callstack` attribute has no effect on inference process,
+    // we will not load it into op_desc.
+    if (attr_name != "op_callstack") {
       auto type = any_desc.GetAttrType(attr_name);
       set_attr(attr_name, type);
     }
+  }
 }
 
 template <typename OpDescType>