fix(DB/loot): Adjust SM mobs' loot tables (#5947)

data/sql/updates/pending_db_world/rev_1621426406097836315.sql

@@ -0,0 +1,12 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1621426406097836315');
+
+SET @REF_TIGERSTRIKE_MANTLE := 24053;
+
+-- 4287 - Scarlet Gallant
+-- 4291 - Scarlet Diviner
+-- 4296 - Scarlet Adept
+-- 4299 - Scarlet Chaplain
+-- 4306 - Scarlet Torturer
+-- 4540 - Scarlet Monk
+DELETE FROM `creature_loot_template` 
+WHERE `Reference` = @REF_TIGERSTRIKE_MANTLE AND `entry` IN (4287, 4291, 4296, 4299, 4306, 4540);