[style]: 移除 DispatchMessage (#224)

message_handle.go

@@ -11,14 +11,6 @@ type MessageDispatcher interface {
 	Dispatch(msg *Message)
 }
 
-// DispatchMessage 跟 MessageDispatcher 结合封装成 MessageHandler
-// Deprecated: use MessageMatchDispatcher.AsMessageHandler instead
-func DispatchMessage(dispatcher MessageDispatcher) func(msg *Message) {
-	return func(msg *Message) { dispatcher.Dispatch(msg) }
-}
-
-// MessageDispatcher impl
-
 // MessageContextHandler 消息处理函数
 type MessageContextHandler func(ctx *MessageContext)
 

source/bot.md

@@ -241,7 +241,7 @@ dispatcher.OnText(func(ctx *openwechat.MessageContext){
 })
 
 // 注册消息回调函数
-bot.MessageHandler = openwechat.DispatchMessage(dispatcher)
+bot.MessageHandler = dispatcher.AsMessageHandler()
 ```
 
 `openwechat.DispatchMessage`会将消息转发给`dispatcher`对象处理