doc: update readme

README.md

@@ -236,7 +236,6 @@ enable_download_txt: false
 - **forward_limit** - Limit the number of forwards per minute, the default is 33, please do not modify this parameter by default.
 - **allowed_user_ids** - Who is allowed to use the robot? The default login account can be used. Please add single quotes to the name with @.
 - **date_format** Support custom configuration of media_datetime format in file_path_prefix.see [python-datetime](https://docs.python.org/3/library/datetime.html)
-- **drop_no_audio_video*** Since the telegram server does not support uploading a set of media, an error will be reported when uploading a video without audio, so use ffmpeg to process it. If not, set this option to true. The default is false.
 - **enable_download_txt** Enable download txt file, default `false`
 
 ## Execution

README_CN.md

@@ -232,7 +232,6 @@ enable_download_txt: false
 - **forward_limit** - 限制每分钟转发次数，默认为33，默认请不要修改该参数
 - **allowed_user_ids** - 允许哪些人使用机器人，默认登录账号可以使用，带@的名称请加单引号
 - **date_format** - 支持自定义配置file_path_prefix中media_datetime的格式，具体格式查看 [python-datetime](https://docs.python.org/zh-cn/3/library/time.html)
-- **drop_no_audio_video** 由于telegram服务器不支持上传一组媒体的时候，上传没有音频的视频会报错，所以使用ffmpeg处理，如果不处理将该选项置为true，默认为false
 - **enable_download_txt** 启用下载txt文件，默认`false`
 
 ## 执行