Yes you can remove the buttons on the full editor, however, this will be changed on your entire site. I dont want to restrict the full html editor. I will need that for posts. I just want people to use the mini editor in discussions.

In the discussion and post editor, I chose the standard editor, which does not limit functionality at all. Moreover, you can also add or remove any buttons and customize everything to your liking. I also encountered this problem, but it seems that the full editor is selected for the comments on the discussions.

Well, this is the entire problem. It seems like you can not change the editor type for comments/replies in discussions. I simply can not find that option.