Currently, I don't think there's anything for this functionality. Imo, it'd be very neat to have this, for stuff like biomes.
This'll probably apply to blocks in the future too, so I'd say it's a priority when that happens.

The problem is that this is the same as removing an entry from the registry

The problem is that this is the same as removing an entry from the registry

Ah, thanks for explaining.

I think this is actually possible. Of course, certain features - like checking for tags - would be disabled, as tags are loaded after registries.