Hills Biomes namespaces still exist in game despite being removed

The hills biomes still appear in the locatebiome despite being removed from the game(if you try and execute any of the commands it will say that there is not a biome of that sort within reasonable distance)

To be clear, I know that the hills biomes being removed are intentional as stated here in the update log

"

• Natural variation in terrain shape and elevation, independently from biomes. For example, forests and deserts could form up on a hill without needing a special biome just for that.

"

Its just that the namespaces for those biomes should not exist if the biomes are removed, as they are unnecessary, and clutter the autofill command options when doing /locatebiome

Also, since the hills biomes are required criteria for the adventuring time achievement, this achievement is now impossible, you can only get so far. I know that the achievement hasn't been updated however, as there are other biomes like meadows that are still unaccounted for in the achievement