Scripts: Random script fixes and code optimizations
Scripts/Icecrown Citadel: Fixed Ice Tomb targeting tanks in phase 3 in Sindragosa encounter

Closes #8778
[DB/MISC]: To Rule The Skies (23061) & Onyx Scales
Delete  	2013_08_19_02_world_sai.sql

Removed file which broke the repo (tab in name)
Core/Auras

* Fixed unsafe removal of charm auras, it is now safe to remove them inside AI hooks
* Fixes crash in SmartAI::EnterEvadeMode

Closes #8679
DB: Fixup for last file name