docs: remove Atlas Cloud banner from README

Author: hgmzhn

README.md

@@ -15,14 +15,6 @@
 
 </div>
 
-<p align="center">
-  <a href="https://www.atlascloud.ai/?utm_source=github&utm_medium=link&utm_campaign=manga-translator-ui">
-    <img src="doc/images/atlas-cloud-logo.png" alt="Atlas Cloud" width="200">
-  </a>
-</p>
-
-> 🎁 **[Atlas Cloud](https://www.atlascloud.ai/?utm_source=github&utm_medium=link&utm_campaign=manga-translator-ui)** 是一个全模态、OpenAI 兼容的 AI 推理平台——可作为本项目 `OpenAI` 翻译器的即插即用后端，用一个 Key 即可调用 DeepSeek、Qwen、GLM、Kimi、MiniMax 等 LLM，以及 Gemini、Qwen3-VL 等多模态模型用于"高质量翻译"，无需为每家厂商单独接入。配置方式见 [API 配置教程](doc/API_CONFIG.md#atlas-cloud-api-配置)，价格友好：[coding plan](https://www.atlascloud.ai/console/coding-plan)。
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 **语言 / Language**: 简体中文 | [English](README_EN.md)
 
 一键翻译漫画图片中的文字，支持日漫、韩漫、美漫，黑白漫和彩漫均可识别。自动检测、翻译、嵌字，支持日语、中文、英语等多种语言，内置可视化编辑器可调整文本框。

README_EN.md

@@ -15,14 +15,6 @@
 
 </div>
 
-<p align="center">
-  <a href="https://www.atlascloud.ai/?utm_source=github&utm_medium=link&utm_campaign=manga-translator-ui">
-    <img src="doc/images/atlas-cloud-logo.png" alt="Atlas Cloud" width="200">
-  </a>
-</p>
-
-> 🎁 **[Atlas Cloud](https://www.atlascloud.ai/?utm_source=github&utm_medium=link&utm_campaign=manga-translator-ui)** is a full-modal, OpenAI-compatible AI inference platform — plug it into this project's `OpenAI` translator as a drop-in backend and use one key to reach LLMs (DeepSeek, Qwen, GLM, Kimi, MiniMax …) as well as multimodal models (Gemini, Qwen3-VL …) for the high-quality translator, with no per-vendor setup. See the [API configuration guide](doc/en/API_CONFIG.md#atlas-cloud-api-setup); budget-friendly [coding plan](https://www.atlascloud.ai/console/coding-plan).
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 **Language / 语言**: [简体中文](README.md) | English
 
 Translate text in manga images with one click. The app supports Japanese manga, Korean comics, Western comics, black-and-white pages, and color pages. It can automatically detect text, run OCR, translate, inpaint, typeset, and it includes a built-in visual editor for adjusting text boxes.