remove vertical offset

examples/webgl_shadow_contact.html

@@ -137,7 +137,6 @@
 				} );
 				fillPlane = new THREE.Mesh( planeGeometry, fillPlaneMaterial );
 				fillPlane.rotateX( Math.PI );
-				fillPlane.position.y -= 0.00001;
 				shadowGroup.add( fillPlane );
 
 				// the camera to render the depth material from