well, i can't offer a way to remove those posts from that page but i can show how to find only unanswered threads in other forums
How to search an individual sub forum for unanswered questions with no replies
On any sub forum, click the filters header
you will see this pop up -
View: https://i.imgur.com/HrXpj34.jpg
Under answer, set it to Unresolved questions
Under reply status, set it to Only threads with no replies
Only downside is you can't save the filters, so you might get sick of doing it every time... or save it as a bookmark on your browser.
I don't use it here, I have set it up for a similar purpose as a bookmark on Tom's Hardware -
link
2 things - I didn't think pictures worked?, and you cannot add filters to the Unanswered question page as it is actually the output of a filtered search. we have asked similar in past
also notices he didn't quite answer question but it might help someone
You would need more filter choices. If you want to mute, you also need a choice of only show certain forums there.
curious how the new filter is different to the one in normal forums -
View: https://i.imgur.com/Jixd44h.jpg