Core/Spells: Remove all hardcoded restrictions for pick pocket spell effect and rely only on presence of pickpocket loot in db

sql/updates/world/4.3.4/2022_10_04_00_world.sql

@@ -0,0 +1,3 @@
+DELETE FROM `spell_script_names` WHERE `ScriptName`='spell_rog_pickpocket';
+INSERT INTO `spell_script_names` (`spell_id`,`ScriptName`) VALUES
+(921,'spell_rog_pickpocket');