[webapi] Remove CSS Text Decoration Level 3 test suite from IVI TCT
[webapi] Remove Ambient Light test suite from IVI TCT
[webapi] Remove Contacts Manager test suite from IVI TCT
[webapi] Remove Gamepad test suite from IVI TCT
[webapi] Remove In-App Purchase test suite from IVI TCT
[webapi] Remove Imports test suite from IVI TCT
[webapi] Remove HTML5 Input test suite from IVI TCT
[webapi] Remove W3C Messaging test suite from IVI TCT
[webapi] Remove Native File System test suite from IVI TCT
[webapi] Remove HTML5 Picture test suite from IVI TCT
[webapi] Remove Presentation test suite from IVI TCT
[webapi] Remove Promises test suite from IVI TCT
[webapi] Remove Shadow DOM test suite from IVI TCT
[webapi] Remove Task Scheduler test suite from IVI TCT
[webapi] Remove WebCL test suite from IVI TCT
[webapi] Remove Shell packaging scripts
[behavior] Unify the LICENSE statement in the root
Update documents to reflect IVI TCT

Only keep documents for Behavior, WebAPI and Web Runtime
Remove byte order mark