Prevent features from spawning in the overworld

In the files of the mod Laendli Transport, I can see that structures are actually features. I mean that there is a "structures" folder with the .nbt files inside. But, in the "worldgen" folder, there only are features (placed and configured). I made a working custom dimension with a custom biome (I use it to ban structures I don't want) : "bandim:bandimbiome1". How can I make those features sent over there, please?