Delete ThreadLocalStorage on shutdown
Delete ThreadLocalStorage on shutdown

Currently DALi ThreadLocalStorage object is not deleted
on shutdown.

Reported by Valgrind / Valkyrie

Change-Id: I376f2a05c149b3ac0d81e07fa1052fd44ee6d8a7

dalihub/dali-core,dalihub/dali-core,dalihub/dali-core,dalihub/dali-core