"hosts -d" command is just not working in Metasploit

[embly]

I'm a major newbie so this is probably a stupid question but I've gone to like the third page of Google and can't find anything about why this is happening. I'm basically just testing out the basics of Metasploit on my home router to mess around and I want to delete a host that I added with the "hosts -a" command. I type "hosts -d 192.168.1.1" and it's still in my hosts list. I'll link a screen shot of whats happening as well.

https://imgur.com/a/xpcZHaG