delete test_data_generator (#31987)

python/paddle/distributed/fleet/data_generator/test_data_generator.py

-#   Copyright (c) 2020 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
-import paddle
-import paddle.distributed.fleet as fleet
-
-
-class SyntheticData(fleet.MultiSlotDataGenerator):
-    def generate_sample(self, line):
-        def data_iter():
-            for i in range(10000):
-                yield ("words", [1, 2, 3, 4]), ("label", [0])
-
-        return data_iter
-
-
-class SyntheticStringData(fleet.MultiSlotStringDataGenerator):
-    def generate_sample(self, line):
-        def data_iter():
-            for i in range(10000):
-                yield [("words", ["1", "2", "3", "4"]), ("label", ["0"])]
-
-        return data_iter
-
-
-sd = SyntheticData()
-sd.run_from_memory()
-
-sd2 = SyntheticStringData()
-sd2.run_from_memory()