You can safely remove those services, but if you restore a snapshot/backup, it will not spin up correctly, since those services are partly responsible for setting the correct network interface and other specific things of your droplet.
That means you have to use the Console via the control panel to re-establish the services to get networking working again or manual edit the configurations.
And if you resize your droplet, there might be problems too. As well as if the data center reboots, then it's important for getting the droplet up again correctly.
All in it's very tiny scripts, which are helpful for managing your droplet.
I would say the same thing as @mzs114 - leave them.