[Docathon][Remove File No.47-55]清理未暴露在 sphinx toctree 下的文档

[hu-qi]

序号	文件或目录	是否保留	原因	链接
47	docs/dev_guides/op_optimization/kernel_primitive_api/add_example_en.md	否	未被引用	https://www.paddlepaddle.org.cn/documentation/docs/en/develop/dev_guides/op_optimization/kernel_primitive_api/add_example_en.html
48	docs/dev_guides/op_optimization/kernel_primitive_api/api_description_en.rst	否	未被引用	https://www.paddlepaddle.org.cn/documentation/docs/en/develop/dev_guides/op_optimization/kernel_primitive_api/api_description_en.html
49	docs/dev_guides/op_optimization/kernel_primitive_api/compute_api_en.md	否	未被引用	https://www.paddlepaddle.org.cn/documentation/docs/en/develop/dev_guides/op_optimization/kernel_primitive_api/compute_api_en.html
50	docs/dev_guides/op_optimization/kernel_primitive_api/example_en.rst	否	未被引用	https://www.paddlepaddle.org.cn/documentation/docs/en/develop/dev_guides/op_optimization/kernel_primitive_api/example_en.html
51	docs/dev_guides/op_optimization/kernel_primitive_api/functor_api_en.md	否	未被引用	https://www.paddlepaddle.org.cn/documentation/docs/en/develop/dev_guides/op_optimization/kernel_primitive_api/functor_api_en.html
52	docs/dev_guides/op_optimization/kernel_primitive_api/index_en.rst	否	未被引用	https://www.paddlepaddle.org.cn/documentation/docs/en/develop/dev_guides/op_optimization/kernel_primitive_api/index_en.html
53	docs/dev_guides/op_optimization/kernel_primitive_api/io_api_en.md	否	未被引用	https://www.paddlepaddle.org.cn/documentation/docs/en/develop/dev_guides/op_optimization/kernel_primitive_api/io_api_en.html
54	docs/dev_guides/op_optimization/kernel_primitive_api/model_example_en.md	否	未被引用	https://www.paddlepaddle.org.cn/documentation/docs/en/develop/dev_guides/op_optimization/kernel_primitive_api/model_example_en.html
55	docs/dev_guides/op_optimization/kernel_primitive_api/reduce_example_en.md	否	未被引用	https://www.paddlepaddle.org.cn/documentation/docs/en/develop/dev_guides/op_optimization/kernel_primitive_api/reduce_example_en.html

[paddle-bot[bot]]

感谢你贡献飞桨文档，文档预览构建中，Docs-New 跑完后即可预览，预览链接：http://preview-pr-6632.paddle-docs-preview.paddlepaddle.org.cn/documentation/docs/zh/api/index_cn.html 预览工具的更多说明，请参考：飞桨文档预览工具

[sunzhongkai588]

@hu-qi 这部分应该是得暴露在官网的，应该是这里的引用链接没写对，导致没有暴露 https://github.com/PaddlePaddle/docs/blob/446653d0927d18510695c74e4f7b9b766d171e72/docs/dev_guides/index_en.rst#L9

正确的链接应该是<./op_optimization/kernel_primitive_api/index_en.html>

[hu-qi]

@hu-qi 这部分应该是得暴露在官网的，应该是这里的引用链接没写对，导致没有暴露

https://github.com/PaddlePaddle/docs/blob/446653d0927d18510695c74e4f7b9b766d171e72/docs/dev_guides/index_en.rst#L9

正确的链接应该是<./op_optimization/kernel_primitive_api/index_en.html>

不知道这么修改对不对，您看看。