use wrt() now that it's exported properly

panda/src/particlesystem/spriteParticleRenderer.cxx

@@ -120,7 +120,6 @@ set_from_node(const NodePath &node_path) {
   // just the bottom arc.
   Texture *tex = (Texture *)NULL;
 
-  /*
   NodeTransitionWrapper ntw(TextureTransition::get_class_type());
   wrt(gnode, geom_node_path.begin(), geom_node_path.end(), 
       (Node *)NULL, ntw, RenderRelation::get_class_type());
@@ -130,19 +129,6 @@ set_from_node(const NodePath &node_path) {
       tex = tt->get_texture();
     }
   }
-  */
-  // Shoot, wrt() doesn't work across DLL's.  Just walk through the
-  // arcs.
-  NodePath::iterator npi;
-  for (npi = geom_node_path.begin(); npi != geom_node_path.end(); ++npi) {
-    NodeRelation *arc = (*npi);
-    const TextureTransition *tt;
-    if (get_transition_into(tt, arc)) {
-      if (tt->is_on()) {
-        tex = tt->get_texture();
-      }
-    }
-  }
 
   if (tex == (Texture *)NULL) {
     particlesystem_cat.error()