Refactor image upload feature to handle disabled media upload functio…

…nality

README.md

@@ -3,26 +3,6 @@
 免费图片托管解决方案，Flickr/imgur 替代品。使用 Cloudflare Pages 和 Telegraph。
 
 [English](README-EN.md)|中文
-> [!WARNING]  
-> **The image upload feature is currently unavailable, but previously uploaded images can still be loaded normally.**
-> 
-> **已知问题：图片上传功能目前无法使用，但已有图片仍然可以正常加载。需要了解具体原因请看下面的内容**
-
-> [!IMPORTANT]
-> **Telegram has disabled the media upload functionality of Telegraph, which this project relies on. As a result, the image upload feature is no longer functional. We are currently working on a solution.**
-> 
-> **Telegram 已禁用本项目所依赖的 Telegraph 的新媒体上传功能，因此目前新图片上传功能将无法继续使用，我们正在寻找解决方案。**
-
-> [!NOTE]
-> 更多信息：
-> For more details, please refer to the official statement: [Telegram Announcement](https://t.me/durov/343)
-> 
-> ✂️ We’ve also disabled new media uploads to Telegraph, our standalone blogging tool, which seems to have been misused by anonymous actors.
-> 
-> ✂️ 我们还禁用了独立博客工具 Telegraph 的新媒体上传功能，因为它似乎被匿名用户滥用了。
->
-> 相关issue: [#180](https://github.com/cf-pages/Telegraph-Image/issues/180) [#178](https://github.com/cf-pages/Telegraph-Image/issues/178)
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 ## 如何部署