remove use of non existent parameters

examples/webgl_materials_cubemap_dynamic.html

@@ -319,11 +319,11 @@
 
 					var params  = {
 
-						"a" : { map: flareA, useScreenCoordinates: false, color: 0xffffff, blending: THREE.AdditiveBlending },
-						"b" : { map: flareB, useScreenCoordinates: false, color: 0xffffff, blending: THREE.AdditiveBlending },
+						"a" : { map: flareA, color: 0xffffff, blending: THREE.AdditiveBlending },
+						"b" : { map: flareB, color: 0xffffff, blending: THREE.AdditiveBlending },
 
-						"ar" : { map: flareA, useScreenCoordinates: false, color: 0xff0000, blending: THREE.AdditiveBlending },
-						"br" : { map: flareB, useScreenCoordinates: false, color: 0xff0000, blending: THREE.AdditiveBlending }
+						"ar" : { map: flareA, color: 0xff0000, blending: THREE.AdditiveBlending },
+						"br" : { map: flareB, color: 0xff0000, blending: THREE.AdditiveBlending }
 
 					};