XF 1.2 Disable Links in BB Code Editor and Rich Text Editor?

Is it possible to disable/hide the "link" button in the Rich Text Editor and disable the ability to add links in the BB Code Editor by default?

Ideally I'd like to set this up as a permission level, so users get these options back once they've made X number of posts.

But if that's not possible I'd settle for just removing the ability to link completely.