Fix particlesystem nested RenderBin issue (Bug #2631)

components/nifosg/nifloader.cpp

@@ -868,8 +868,6 @@ namespace NifOsg
                 mat->setColorMode(osg::Material::AMBIENT);
             }
 
-            partsys->getOrCreateStateSet()->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
-
             // particle system updater (after the emitters and affectors in the scene graph)
             // I think for correct culling needs to be *before* the ParticleSystem, though osg examples do it the other way
             osg::ref_ptr<osgParticle::ParticleSystemUpdater> updater = new osgParticle::ParticleSystemUpdater;