You could easily find out the new CSS selector to hide the apply buttons by using your Chrome or Firefox: open the "Developer tools" extension and use the functionality to select an element in the current page to pick the buttons and see what kind of common and unique class they have.
It isn't any black magic, just pure CSS selectors rules.
I am trying that, Gianni, but I'm struggling with a very minimal amount of CSS knowledge. I see a few things that look promising, but I'm having to learn CSS as I go.
Can't help you not having an OAC available