improve readme.

Author: caikelun

README.md

@@ -41,14 +41,6 @@ You can refer to the sample app in [app module](app), or refer to the hook/unhoo
 
 ShadowHook is published on [Maven Central](https://search.maven.org/), and uses [Prefab](https://google.github.io/prefab/) package format for [native dependencies](https://developer.android.com/studio/build/native-dependencies), which is supported by [Android Gradle Plugin 4.0+](https://developer.android.com/studio/releases/gradle-plugin?buildsystem=cmake#native-dependencies).
 
-```Gradle
-allprojects {
-    repositories {
-        mavenCentral()
-    }
-}
-```
-
 ```Gradle
 android {
     buildFeatures {

README.zh-CN.md

@@ -41,14 +41,6 @@ ShadowHook 现在被用于 TikTok，抖音，今日头条，西瓜视频，飞
 
 ShadowHook 发布在 [Maven Central](https://search.maven.org/) 上。为了使用 [native 依赖项](https://developer.android.com/studio/build/native-dependencies)，ShadowHook 使用了从 [Android Gradle Plugin 4.0+](https://developer.android.com/studio/releases/gradle-plugin?buildsystem=cmake#native-dependencies) 开始支持的 [Prefab](https://google.github.io/prefab/) 包格式。
 
-```Gradle
-allprojects {
-    repositories {
-        mavenCentral()
-    }
-}
-```
-
 ```Gradle
 android {
     buildFeatures {