avmediavlc: Remove duplicated external usage

Change-Id: I2f41c13465740e5079e6af413f4c8217d6dcd36b
Skeleton of OpenGL avmedia service for playing 3D models

Change-Id: I3bf9e68e1a08ff3db065ec7f4e135119b7d1a4ef
Basic UI for inserting 3D models

-By now only in impress.
-One supported file format: gltf/.json

Change-Id: I66b9cc91afeac292a19e8917f923228dc96a791a