DB/Misc: Fix few startup errors

sql/updates/world/4.3.4/2017_06_19_00_world.sql

@@ -0,0 +1,7 @@
+--
+UPDATE `creature_template` SET `AIName`='NullCreatureAI' WHERE `entry` IN (27490,27894,28781,30413);
+UPDATE `creature_template` SET `AIName`='' WHERE `entry` IN (9637,12999,47549);
+
+UPDATE `creature` SET `spawndist`=5 WHERE `guid` IN (51879,51914);
+
+DELETE FROM `conditions` WHERE `SourceTypeOrReferenceId`=19 AND `SourceEntry`=26391 AND `ConditionValue1`=31145;