docs: no longer need to register 'WXApi' in 'AppDelegate' on ios side

doc/LAUNCH_APP_FROM_H5.md

@@ -8,18 +8,6 @@
 - The event type of **Launch-App-From-H5** on Android is `WeChatShowMessageFromWXRequest`
 - The event type of **Launch-App-From-H5** on IOS is `WeChatLaunchFromWXRequest`
 
-> ### iOS specific configuration
-
-Please register your WXApi in your `AppDelegate`:
-
-```oc
-- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-    //向微信注册
-[[FluwxDelegate defaultManager] registerWxAPI:@"" universalLink:@""];
-    return YES;
-}
-```
-
 ## Example
 
 ```dart

doc/LAUNCH_APP_FROM_H5_CN.md

@@ -8,18 +8,6 @@
 - 安卓端 **微信唤起App** 的事件类型为 `WeChatShowMessageFromWXRequest`
 - IOS端 **微信唤起App** 的事件类型为 `WeChatLaunchFromWXRequest`
 
-> ### iOS 特定配置
-
-请在你的`AppDelegate`中主动注册`WXApi`
-
-```oc
-- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-    //向微信注册
-[[FluwxDelegate defaultManager] registerWxAPI:@"" universalLink:@""];
-    return YES;
-}
-```
-
 ## 示例
 
 ```dart