fix ItemStackLike#maxStackQuantity

Author: MrHell228

src/main/java/org/spongepowered/api/item/inventory/ItemStackLike.java

@@ -73,9 +73,7 @@ public interface ItemStackLike extends SerializableDataHolder, ComponentLike, Ho
      *
      * @return Max stack quantity
      */
-    default int maxStackQuantity() {
-        return this.require(Keys.MAX_STACK_SIZE);
-    }
+    int maxStackQuantity();
 
     /**
      * Returns true if {@link #quantity()} is zero and therefore this