ClearLockNotifications allows you to delete the notifications of a specific application from the lock screen, which by default is impossible, they are simply removed when you unlock the phone.
To delete the notifications, click on the application icon, which you have to slide to open the notification, and an icon with an "X" will appear with which you can make it disappear.
You can download it free en Cydia.
You will find it in the BigBoss repo.
You need to have done the jailbreak.
Something like this is what I am looking for but for the Notification Center. I don't understand how when you get a missed call or message, etc. in the notification center and click on the missed call and dial the contact and end the call, as the red number still appears on the phone icon indicating that there is a missed call. I think it should go away, since we have already seen the call. Thank you anyway.