remove unused var from extras/camera/orbit-camera-input-mouse.js (#1103)
remove unused var from extras/camera/orbit-camera-input-mouse.js (#1103)


aidinabedi/playcanvas-engine,MicroWorldwide/PlayCanvas,sereepap2029/playcanvas,sereepap2029/playcanvas,aidinabedi/playcanvas-engine,playcanvas/engine,guycalledfrank/engine,guycalledfrank/engine,MicroWorldwide/PlayCanvas,playcanvas/engine,sereepap2029/playcanvas