fix(Core/Misc): restore playercreateinfo_item item deletion functionality (#7470)

data/sql/updates/pending_db_world/rev_1629485842027723200.sql

@@ -0,0 +1,7 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1629485842027723200');
+
+ALTER TABLE `playercreateinfo_item`
+    CHANGE `amount` `amount` INT SIGNED NOT NULL DEFAULT 1;
+
+DELETE FROM `playercreateinfo_item` WHERE `itemid` = 40582;
+INSERT INTO `playercreateinfo_item` (`race`, `class`, `itemid`, `amount`, `Note`) VALUES (0, 6, 40582, -1, "[TDB PH] - unsused Scourgestone");

src/server/game/Globals/ObjectMgr.cpp

@@ -3458,7 +3458,7 @@ void ObjectMgr::LoadPlayerInfo()
                     continue;
                 }
 
-                int32 amount   = fields[3].GetUInt16();
+                int32 amount = fields[3].GetInt32();
 
                 if (!amount)
                 {