Removed the last of the warnings.  Now all obsolete warnings will come from user's own code.
Removed the last of the warnings.  Now all obsolete warnings will come from user's own code.

NeerajW/HoloToolkit-Unity,willcong/HoloToolkit-Unity,HattMarris1/HoloToolkit-Unity,paseb/MixedRealityToolkit-Unity,out-of-pixel/HoloToolkit-Unity,paseb/HoloToolkit-Unity