How I can remove the "dockerhost" from both local reference and remote instance?

Hi There!

LFD254

1. So, when I use this command: $ docker-machine ls, it came out like that:

7611bfb91b1db6a956806a8c28ed827e8216a12ff957edd3633daa53db513a6a - digitalocean Error Unknown dropletID is invalid because cannot be less than 1 dockerhost - digitalocean Error Unknown dropletID is invalid because cannot be less than 1 helio-nyc1 - digitalocean Error Unknown dropletID is invalid because cannot be less than 1

2. Then, I tried to remove them by docker-machine using this command: docker-machine rm 7611bfb91b1db6a956806a8c28ed827e8216a12ff957edd3633daa53db513a6a, it came out unexpected EOF,

also: docker-machine rm dockerhost, it came out unexpected EOF,

the same happened for this one too: docker-machine rm helio-nyc1,

it came out unexpected EOF,

I believe these host instances have to be removed on remote server side of the DigitalOcean.com, so I can build the dockerhost platform again, so I can do the Labs LFD254 Labs: 3.1-30

Thank You So Much! Helio