Remove redundant directory (#3844)

fluid/AutoDL/LRC/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [AutoDL/LRC](../../../AutoDL/LRC).

fluid/AutoDL/LRC/README_cn.md

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fluid/DeepASR/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleSpeech/DeepASR](../../PaddleSpeech/DeepASR).

fluid/DeepASR/README_cn.md

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fluid/DeepQNetwork/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleRL/DeepQNetwork](../../PaddleRL/DeepQNetwork).

fluid/DeepQNetwork/README_cn.md

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fluid/PaddleCV/HiNAS_models/README.md

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-Hi! 
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-This directory has been deprecated. 
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-Please visit the project at [AutoDL/HiNAS_models](../../../AutoDL/HiNAS_models).

fluid/PaddleCV/HiNAS_models/README_cn.md

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fluid/PaddleCV/caffe2fluid/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [X2Paddle](https://github.com/PaddlePaddle/X2Paddle).

fluid/PaddleCV/deeplabv3+/README.md

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fluid/PaddleCV/face_detection/README.md

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fluid/PaddleCV/face_detection/README_cn.md

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fluid/PaddleCV/gan/c_gan/README.md

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fluid/PaddleCV/gan/cycle_gan/README.md

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fluid/PaddleCV/human_pose_estimation/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleCV/human_pose_estimation](../../../PaddleCV/human_pose_estimation).

fluid/PaddleCV/human_pose_estimation/README_cn.md

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fluid/PaddleCV/icnet/README.md

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fluid/PaddleCV/image_classification/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleCV/image_classification](../../../PaddleCV/image_classification).

fluid/PaddleCV/image_classification/README_cn.md

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-您好，该项目已被迁移，请移步到 [PaddleCV/image_classification](../../../PaddleCV/image_classification) 目录下浏览本项目。

fluid/PaddleCV/image_classification/README_ngraph.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleCV/image_classification](../../../PaddleCV/image_classification).

fluid/PaddleCV/metric_learning/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleCV/metric_learning](../../../PaddleCV/metric_learning).

fluid/PaddleCV/metric_learning/README_cn.md

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fluid/PaddleCV/object_detection/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleCV/PaddleDetection](../../../PaddleCV/PaddleDetection).

fluid/PaddleCV/object_detection/README_cn.md

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-您好，该项目已被迁移，请移步到 [PaddleCV/PaddleDetection](../../../PaddleCV/PaddleDetection) 目录下浏览本项目。

fluid/PaddleCV/object_detection/README_quant.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleCV/ssd](../../../PaddleCV/ssd).

fluid/PaddleCV/ocr_recognition/README.md

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fluid/PaddleCV/rcnn/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleCV/PaddleDetection](../../../PaddleCV/PaddleDetection).

fluid/PaddleCV/rcnn/README_cn.md

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-您好，该项目已被迁移，请移步到 [PaddleCV/PaddleDetection](../../../PaddleCV/PaddleDetection) 目录下浏览本项目。

fluid/PaddleCV/video/README.md

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fluid/PaddleCV/video/models/attention_cluster/README.md

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fluid/PaddleCV/video/models/attention_lstm/README.md

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fluid/PaddleCV/video/models/nextvlad/README.md

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fluid/PaddleCV/video/models/nonlocal_model/README.md

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-您好，该项目已被迁移，请移步到 [PaddleCV/video/models/nonlocal_model](../../../../../PaddleCV/video/models/nonlocal_model/) 目录下浏览本项目。

fluid/PaddleCV/video/models/stnet/README.md

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fluid/PaddleCV/video/models/tsm/README.md

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fluid/PaddleCV/video/models/tsn/README.md

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fluid/PaddleCV/video_classification/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleCV/video_classification](../../../PaddleCV/video_classification).

fluid/PaddleCV/yolov3/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleCV/PaddleDetection](../../../PaddleCV/PaddleDetection).

fluid/PaddleCV/yolov3/README_cn.md

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-您好，该项目已被迁移，请移步到 [PaddleCV/PaddleDetection](../../../PaddleCV/PaddleDetection) 目录下浏览本项目。

fluid/PaddleNLP/chinese_ner/README.md

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-您好，该项目已被迁移，请移步到 [PaddleNLP/unarchived/chinese_ner](../../../PaddleNLP/unarchived/chinese_ner/) 目录下浏览本项目。

fluid/PaddleNLP/deep_attention_matching_net/README.md

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-Hi! 
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-This directory has been deprecated. 
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-Please visit the project at [PaddleNLP/unarchived/deep_attention_matching_net](../../../PaddleNLP/unarchived/deep_attention_matching_net).

fluid/PaddleNLP/language_model/gru/README.md

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fluid/PaddleNLP/language_model/lstm/README.md

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-您好，该项目已被迁移，请移步到 [PaddleNLP/unarchived/language_model/lstm](../../../../PaddleNLP/unarchived/language_model/lstm) 目录下浏览本项目。

fluid/PaddleNLP/machine_reading_comprehension/README.md

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-Hi! 
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-This directory has been deprecated. 
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-Please visit the project at [PaddleNLP/unarchived/machine_reading_comprehension](../../../PaddleNLP/unarchived/machine_reading_comprehension).

fluid/PaddleNLP/neural_machine_translation/README.md

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-Hi! 
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-This directory has been deprecated. 
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-Please visit the project at [PaddleNLP/unarchived/neural_machine_translation](../../../PaddleNLP/unarchived/neural_machine_translation).

fluid/PaddleNLP/neural_machine_translation/rnn_search/README.md

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fluid/PaddleNLP/neural_machine_translation/transformer/README.md

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fluid/PaddleNLP/sequence_tagging_for_ner/README.md

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fluid/PaddleNLP/text_classification/README.md

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-您好，该项目已被迁移，请移步到 [PaddleNLP/unarchived/text_classification](../../../PaddleNLP/unarchived/text_classification) 目录下浏览本项目。

fluid/PaddleNLP/text_matching_on_quora/README.md

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-Hi! 
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-This directory has been deprecated. 
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-Please visit the project at [PaddleNLP/unarchived/text_matching_on_quora](../../../PaddleNLP/unarchived/text_matching_on_quora).

fluid/PaddleRec/ctr/README.cn.md

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fluid/PaddleRec/ctr/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleRec/ctr](../../../PaddleRec/ctr).

fluid/PaddleRec/din/README.md

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fluid/PaddleRec/gnn/README.md

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fluid/PaddleRec/gru4rec/README.md

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fluid/PaddleRec/multiview_simnet/README.cn.md

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fluid/PaddleRec/multiview_simnet/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleRec/multiview_simnet](../../../PaddleRec/multiview_simnet).

fluid/PaddleRec/ssr/README.md

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fluid/PaddleRec/tagspace/README.md

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fluid/PaddleRec/word2vec/README.md

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fluid/adversarial/README.md

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-Hi!
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-This directory has been deprecated.
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-Please visit the project at [PaddleCV/adversarial](../../PaddleCV/adversarial).

fluid/policy_gradient/README.md

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-您好，该项目已被迁移，请移步到 [PaddleRL/policy_gradient](../../PaddleRL/policy_gradient) 目录下浏览本项目。