In the current situation, if there are multiple warnings you need to delete them one by one. Which is very time-consuming, especially when all of the warnings are pretty much the same.
The situation is even worse on mobile, where the green banner, blocks some parts of the screen. If you have, lets say 7 warnings (which could easily be done if a client is trying to get a IP address but that does not match /etc/hosts), then the banners will block you from clicking the next delete.
My feature request is add something like "delete all" or "delete all in this page", to quickly clear all the warnings.