DB: Drop columns unused for almost 8 years

sql/updates/characters/master/2024_04_09_00_characters.sql

@@ -0,0 +1,15 @@
+DELIMITER ;;
+CREATE PROCEDURE item_instance_deprecated_columns_2024_04_09_00() BEGIN
+  IF EXISTS (SELECT * FROM `information_schema`.`columns` WHERE `table_schema`=SCHEMA() AND `table_name`='item_instance' AND `column_name`='transmogrification') THEN
+
+    ALTER TABLE `item_instance` 
+      DROP `transmogrification`,
+      DROP `enchantIllusion`;
+
+  END IF;
+END;;
+
+DELIMITER ;
+CALL item_instance_deprecated_columns_2024_04_09_00();
+
+DROP PROCEDURE IF EXISTS item_instance_deprecated_columns_2024_04_09_00;