Plugins » Katello

when one removes all hosts from a Host Collection, then it says
You currently don't have any Hosts in this Host Group, you can add Content Hosts after selecting the 'Add' tab.
(emphasis mine)

for a fraction of a second I thought I had just badly fat fingered and done my manual edit in the host groups instead of collections

since this is a trivial change, a PR was made to make everyone's life easier :-)