Removed unnecessary field
Removed unnecessary field

--HG--
branch : feature/material-asset

sanyaade-teachings/engine,H1Gdev/engine,MicroWorldwide/PlayCanvas,horryq/engine-1,guycalledfrank/engine,SuperStarPL/engine,shinate/engine,3DGEOM/engine,maxwellalive/engine,sanyaade-teachings/engine,playcanvas/engine,guycalledfrank/engine,horryq/engine-1,H1Gdev/engine,maxwellalive/engine,nizihabi/engine,horryq/engine-1,sereepap2029/playcanvas,aidinabedi/playcanvas-engine,SuperStarPL/engine,SuperStarPL/engine,nizihabi/engine,sereepap2029/playcanvas,shinate/engine,3DGEOM/engine,sereepap2029/playcanvas,shinate/engine,3DGEOM/engine,maxwellalive/engine,playcanvas/engine,nizihabi/engine,aidinabedi/playcanvas-engine,RainsSoft/engine,sanyaade-teachings/engine,RainsSoft/engine,MicroWorldwide/PlayCanvas,RainsSoft/engine