don't register biomes here

worldedit-core/src/main/java/com/boydti/fawe/jnbt/anvil/HeightMapMCAGenerator.java

@@ -936,7 +936,7 @@ public class HeightMapMCAGenerator extends MCAWriter implements StreamChange, Dr
     public BiomeType getBiomeType(int x, int z) throws FaweException.FaweChunkLoadException {
         int index = z * getWidth() + x;
         if (index < 0 || index >= getArea()) index = Math.floorMod(index, getArea());
-        return BiomeTypes.register(biomes.getByte(index));
+        return BiomeTypes.get(biomes.getByte(index));
     }
 
     @Override

worldedit-core/src/main/java/com/boydti/fawe/object/change/MutableBiomeChange.java

@@ -25,11 +25,11 @@ public class MutableBiomeChange implements Change {
 
     @Override
     public void undo(UndoContext context) throws WorldEditException {
-        context.getExtent().setBiome(mutable, BiomeTypes.register(from));
+        context.getExtent().setBiome(mutable, BiomeTypes.get(from));
     }
 
     @Override
     public void redo(UndoContext context) throws WorldEditException {
-        context.getExtent().setBiome(mutable, BiomeTypes.register(to));
+        context.getExtent().setBiome(mutable, BiomeTypes.get(to));
     }
 }

worldedit-core/src/main/java/com/boydti/fawe/object/clipboard/MemoryOptimizedClipboard.java

@@ -120,7 +120,7 @@ public class MemoryOptimizedClipboard extends FaweClipboard {
         if (!hasBiomes()) {
             return null;
         }
-        return BiomeTypes.register(biomes[index]);
+        return BiomeTypes.get(biomes[index]);
     }
 
     @Override