Removed some outdated comments
Removed some outdated comments

--HG--
branch : feature/multiple-cameras

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