Removal
Anyone can remove a telepad.
Either by using hands, or a pickaxe.
The dropped pad will remember how it was colored, and will drop any upgrades that may have been applied to it.
If you (or anyone else) happen to remove a telepad, the Teleport Interface will still show you the location, but it will be greyed out.
Here, Home and Iron Golem Farm have been removed.
Choosing such a location will prompt you with a choice menu,
you could either forget that location, or force teleport to it.
This means that placing down telepads and protecting them is up to the player. This feature has been implemented to make sure, in multiplayer, that any unwanted removals by a mischievous person would be repairable.