Sorry for the n00b question but...

[JackCoogan]

How do I completely remove a sign from a building or vehicle? :p

[SekoETC]

Click on the name and you must have one of the sign changing tools. Select to remove the sign. It won't change the dynamic name that's only visible to you, so if you want that to be unnamed location, you need to change it separately.

[JackCoogan]

Cheers