Deleting these files as they moved to legacy folder

PiperOrigin-RevId: 437163784

official/vision/detection/README.md

-# Object Detection Models on TensorFlow 2
-
-This repository is deprecated and replaced by the solid
-implementations inside vision/beta/. All the content has been moved to
-[official/legacy/detection](https://github.com/tensorflow/models/tree/master/official/legacy/detection).
-

official/vision/detection/__init__.py

-# Copyright 2022 The TensorFlow 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.
-
-"""Deprecating the vision/detection folder."""
-raise ImportError('This module has been moved to official/legacy/detection')

official/vision/image_classification/README.md

-This repository is deprecated and replaced by the solid
-implementations inside vision/beta/. All the content has been moved to
-[official/legacy/image_classification](https://github.com/tensorflow/models/tree/master/official/legacy/image_classification).

official/vision/image_classification/__init__.py

-# Copyright 2022 The TensorFlow 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.
-
-"""Deprecating the vision/detection folder."""
-raise ImportError(
-    'This module has been moved to official/legacy/image_classification')