聊天记录接口超时时间默认

@@ -48,7 +48,7 @@ exports.fetchImHistory = (encryptedUid, endTime, pageSize, startTime) => {
         val && (params[key] = val);
     });
 
-    return ImService.post('/api/conversationMessage/pageList', params, {timeout: 5000})
+    return ImService.post('/api/conversationMessage/pageList', params)
         .then(result => {
             return result;
         }, () => {