[WDB][5685][ACID] q.900 'Samophlange' - update

- summons will despawn after 2min if no interrupted
- slots corrected

acid part later removed again

(cherry picked from commit cmangos/wotlk-db@e70cb84

Author: Grz3s

Updates/4781_WDB-5685_q.900.sql

@@ -0,0 +1,12 @@
+-- q.900 'Samophlange'
+-- updates
+DELETE FROM spawn_group WHERE Id IN (19020, 19021);
+INSERT INTO spawn_group (Id, Name, Type, MaxCount, WorldState, Flags) VALUES 
+(19020,'Barrens - Main Control Valve RND Spawn NPCs', 0, 2, 19020, 2),
+(19021,'Barrens - Regulator Valve RND Spawn NPCs', 0, 2, 19021, 2);
+-- if no formations then no slots
+DELETE FROM spawn_group_spawn WHERE Id IN (19020, 19021);
+INSERT INTO spawn_group_spawn (Id, Guid, SlotId) VALUES 
+(19020, 158020, -1),
+(19020, 158021, -1),
+(19021, 158022, -1);