Fix WaterRemover: Iterate downwards

Signed-off-by: Lixfel <agga-games@gmx.de>

FightSystem_Core/src/de/steamwar/fightsystem/listener/WaterRemover.java

@@ -86,6 +86,7 @@ public class WaterRemover implements Listener {
         checkBlock(b.getRelative(BlockFace.WEST));
         checkBlock(b.getRelative(BlockFace.NORTH));
         checkBlock(b.getRelative(BlockFace.SOUTH));
+        checkBlock(b.getRelative(BlockFace.DOWN));
     }
 
     private void checkBlock(Block b) {