Improve initialisation performance

worldedit-core/src/main/java/com/sk89q/worldedit/WorldEdit.java

@@ -429,7 +429,7 @@ public final class WorldEdit {
     public void loadMappings() {
         BundledBlockData.getInstance(); // Load block registry
         BundledItemData.getInstance(); // Load item registry
-        LegacyMapper.getInstance(); // Load item registry
+        //LegacyMapper.getInstance(); // Load item registry
     }
 
     /**