How to cancel the notification information contained in oppo mobile phone information? Please note that it was cancelled, not deleted.

Can't cancel, this is the automatic classification information of mobile phone, and can't be closed.

You can open the information software, select all the information, and click' More'-'Move to Message' in the lower right corner, so that the notification message will be moved to the message, but when a new notification message arrives, it will be automatically classified into the notification message.