When we delete a thread, link from feeds is still there, so when user clicks, he get message

Sorry, This thread is in Recycle Bin

Is there any way to remove from feeds all threads deleted.
And also, how we can remove a thread definitively from the recycle bin ?
i did the 2 tasks by myphpadmin, but it will be cool that threads moved to the recycle bin dont appear more in stream feed

thanks