rm unused dir (#951) (#952)

* rm unused dir

* fix wx group

tools/infer/__init__.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
-# limitations under the License.
-
-from .predict import Predictor
-from .utils import parse_args, create_paddle_predictor, preprocess, postprocess, get_image_list, get_image_list_from_label_file, calc_topk_acc, save_prelabel_results, b64_to_np, np_to_b64
\ No newline at end of file