You can use this for deleting the other rules I'm sure as well, except look for those rules in the same template.. Only quesiton is why would you want to delete these rules?
You can pretty much delete anything you see by editing the proper template. It's all about custmoization these days, so even the simplest of changes can make it more appealing. You can add or remove anything you can think of if you find the correct template and edit it properly.