WebGLObjects: Removed unused variable

src/renderers/webgl/WebGLObjects.js

@@ -205,7 +205,6 @@ function WebGLObjects( gl, properties, info ) {
 
 		if ( index !== null ) {
 
-			var edges = {};
 			var array = index.array;
 
 			for ( var i = 0, l = array.length; i < l; i += 3 ) {