Change normals back to previous values.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4008 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CBillboardSceneNode.cpp

@@ -100,13 +100,9 @@ void CBillboardSceneNode::render()
 	2--1
 	*/
 	vertices[0].Pos = pos + topHorizontal + vertical;
-	vertices[0].Normal = up;
 	vertices[1].Pos = pos + horizontal - vertical;
-	vertices[1].Normal = up;
 	vertices[2].Pos = pos - horizontal - vertical;
-	vertices[2].Normal = up;
 	vertices[3].Pos = pos - topHorizontal + vertical;
-	vertices[3].Normal = up;
 
 	// draw