Remove comment in AgeableEntity as it no longer true

This was due to the wrong entity IDs in MCProtocolLib, which have since been patched.

connector/src/main/java/org/geysermc/connector/entity/living/AgeableEntity.java

@@ -41,13 +41,7 @@ public class AgeableEntity extends CreatureEntity {
     @Override
     public void updateBedrockMetadata(EntityMetadata entityMetadata, GeyserSession session) {
         if (entityMetadata.getId() == 15) {
-            // TODO: Figure out why this value sometimes returns an integer
-            // At the time of writing this, the value here sometimes returns as an int
-            // rather than a boolean for donkeys. The wiki.vg documentation is lacking at the
-            // time of writing this, but once this value is known, the bug will be fixed accordingly.
-            if (entityMetadata.getType() == MetadataType.BOOLEAN) {
-                metadata.getFlags().setFlag(EntityFlag.BABY, (boolean) entityMetadata.getValue());
-            }
+            metadata.getFlags().setFlag(EntityFlag.BABY, (boolean) entityMetadata.getValue());
         }
 
         super.updateBedrockMetadata(entityMetadata, session);