fix setTensorWrapper with no_need_buffers (#41892) (#41952)

paddle/fluid/eager/auto_code_generator/final_state_generator/eager_gen.py

@@ -730,11 +730,10 @@ class DygraphFunctionGeneratorBase(FunctionGeneratorBase):
             is_optional = (name in optional_inputs)
 
             if is_fwd_input:
-                need_input_data = "false" if name in self.no_need_buffers else "true"
                 if is_optional:
                     set_tensor_wrappers = f"{indent}if({name}.get_ptr() != nullptr) grad_node->SetTensorWrapper{name}(*({name}.get_ptr()), true);"
                 else:
-                    set_tensor_wrappers = f"{indent}grad_node->SetTensorWrapper{name}({name}, {need_input_data});"
+                    set_tensor_wrappers = f"{indent}grad_node->SetTensorWrapper{name}({name}, true);"
                 set_input_tensor_wrappers_list.append(set_tensor_wrappers)
             else:
                 if num_fwd_outputs > 1: