Remove LEGACY items from list

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

SchematicSystem_Main/src/de/steamwar/schematicsystem/commands/GUI.java

@@ -114,6 +114,8 @@ class GUI {
     private static void changeItem(Player p, Schematic schem){
         List<SWListInv.SWListEntry<Material>> materials = new LinkedList<>();
         for(Material material : Material.values()){
+            if(material.name().startsWith("LEGACY_"))
+                continue;
             SWItem item = new SWItem(material, "§7" + material.name());
             if(item.getItemMeta() != null && material.isItem())
                 materials.add(new SWListInv.SWListEntry<>(item, material));