Too much mob generation, help me look at this code

Too much mob generation, include villager, skeleton, zombie,creeper, and villager register by mod.  My server is Forge1.12.2, Sponge7.1.5

Is there any problem if I register a villager like this? Other than here, I can't think what the problem is.

```

@SubscribeEvent
public void registerModel(RegistryEvent.Register<EntityEntry> event) {
   // event.getRegistry().register();
   List<Biome> values = ForgeRegistries.BIOMES.getValues();
   EntityRegistry.addSpawn(EntityVillager2.class, 1, 1, 1, EnumCreatureType.CREATURE, values.toArray(new Biome[values.size()]));
}

```