Update viewer.js

viewer.js

@@ -231,7 +231,6 @@ export async function initializeViewer(config, instanceId) {
       let matSol = new pc.StandardMaterial();
       matSol.blendType = pc.BLEND_NONE;
       matSol.emissive = new pc.Color([0.1,0.5,1]);
-      matSol.emissiveMap = grilleTex;
       matSol.emissiveIntensity = 1;
       matSol.useLighting = false;
       matSol.update();