docs: remove create-umi instructions, use git clone directly

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

README.md

@@ -74,18 +74,7 @@ An out-of-box UI solution for enterprise applications as a React boilerplate.
 
 ## Usage
 
-### Get Started with Umi Create (Recommended)
-
-Create a new project using `umi create`:
-
-```bash
-npx create-umi myapp
-# Select "Ant Design Pro" template when prompted
-cd myapp
-npm install
-```
-
-### Or Clone Directly
+### Get Started
 
 Clone or download this repository to your local machine:
 

README.zh-CN.md

@@ -77,18 +77,7 @@ Language : [🇺🇸](./README.md) | 🇨🇳
 
 ## 使用
 
-### 使用 Umi Create 创建项目（推荐）
-
-使用 `umi create` 创建新项目：
-
-```bash
-npx create-umi myapp
-# 选择 "Ant Design Pro" 模板
-cd myapp
-npm install
-```
-
-### 或直接克隆
+### 开始使用
 
 克隆或下载本项目到本地：