refine cpp infer doc

README_ch.md

@@ -39,8 +39,6 @@ PaddleOCR旨在打造一套丰富、领先、且实用的OCR工具库，助力
 支持多种OCR相关前沿算法，在此基础上打造产业级特色模型[PP-OCR](./doc/doc_ch/ppocr_introduction.md)和[PP-Structure](./ppstructure/README_ch.md)，并打通数据生产、模型训练、压缩、预测部署全流程。
 
 ![](./doc/features.png)
-![](./doc/features.drawio)
-![](./doc/test.svg)
 
 > 上述内容的使用方法建议从文档教程中的快速开始体验
 

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