def remove
      key = shift_argument
      if key.nil? || key.empty?
        error("Usage: heroku keys:remove KEY\nMust specify KEY to remove.")
      end
      validate_arguments!

      action("Removing #{key} SSH key") do
        api.delete_key(key)
      end
    end
def remove
      key = shift_argument
      if key.nil? || key.empty?
        error("Usage: heroku keys:remove KEY\nMust specify KEY to remove.")
      end
      validate_arguments!

      action("Removing #{key} SSH key") do
        api.delete_key(key)
      end
    end
keys:remove [KEY]

 remove a key from the current user

Examples:

 $ heroku keys:remove email@example.com
 Removing email@example.com SSH key... done