Merge pull request 'Update T2CitemBuilder.java' (#21) from 15.6 into development

Reviewed-on: #21

src/main/java/net/t2code/t2codelib/SPIGOT/api/items/T2CitemBuilder.java

@@ -29,6 +29,7 @@ public class T2CitemBuilder {
             } else glass = new ItemStack(Material.valueOf(item.toUpperCase().replace(".", "_")));
             ItemMeta itemMetaglass = glass.getItemMeta();
             assert itemMetaglass != null;
+            itemMetaglass.setDisplayName("");
             glass.setItemMeta(itemMetaglass);
             glass.setAmount(1);
             for (int i = 0; i < 9 * lines; i++) {