delete tools/generate_op_use_grad_op_desc_maker_spec.py, test=develop (#22308)

tools/generate_op_use_grad_op_desc_maker_spec.py

-# Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import os
-
-os.environ['CUDA_VISIBLE_DEVICES'] = ''
-
-import paddle.fluid as fluid
-import sys
-
-if len(sys.argv) != 2:
-    print('Usage: python generate_op_use_grad_op_desc_maker_spec.py [filepath]')
-    sys.exit(1)
-
-with open(sys.argv[1], 'w') as f:
-    ops = fluid.core._get_use_default_grad_op_desc_maker_ops()
-    for op in ops:
-        f.write(op + '\n')