群组解散后续操作，群组成员数据结构调整

utils/im/index.js

@@ -166,13 +166,10 @@ const addListeners = () => {
             // 解散群
             if (message.content.operation === 'Dismiss') {
                 RongIMLib.cleanHistoryMessages(message.conversationType, message.targetId,
-                    message.sentTime - 1, false, ({
-                        code
-                    }) => {
-                        if (code == 0) {
-                            uni.$emit('onGroupDismiss', message.targetId)
-                        }
-                    })
+                    message.sentTime - 1, false, () => {})
+                // 解散了就删了吧
+                RongIMLib.removeConversation(message.conversationType, message.targetId, () => {})
+                uni.$emit('onGroupDismiss', message.targetId)
             }
             uni.$emit('onReceiveMessage', message)
         }