This mod is disabled in MP.

Hold and release the key on the object you want to remove.
Click on the button to remove it. The buttons have a hierarchy (parent > child > child > child). Removing any parent removes all objects in this hierarchy!

Example:

• parent1
  • child1
    • child_child1
    • (child_child2)
  • (child2)

Removing parent1 will remove child1, child2, child_child1 and child_child2

Most game placed objects will not be saved and will load again.
It is adviced to save before removing anything, since you could remove the terrain by mistake.