Add ut.

ge/single_op/single_op.h

@@ -92,7 +92,6 @@ class DynamicSingleOp {
   rtStream_t stream_ = nullptr;
   size_t num_inputs_ = 0;
   size_t num_outputs_ = 0;
-  ComputeGraphPtr compute_graph_;
 };
 }  // namespace ge
 #endif  // GE_SINGLE_OP_SINGLE_OP_H_