[OGRE-61] Terrain sample, setShadowTextureCasterMaterial is misleading. Don't explicitly set the shadow caster material as it is set in the buildDepthShadowMaterial function.
[OGRE-61] Terrain sample, setShadowTextureCasterMaterial is misleading. Don't explicitly set the shadow caster material as it is set in the buildDepthShadowMaterial function.

paroj/ogre,RealityFactory/ogre,RealityFactory/ogre,paroj/ogre,RealityFactory/ogre,RealityFactory/ogre,paroj/ogre,paroj/ogre,OGRECave/ogre,RealityFactory/ogre,OGRECave/ogre,OGRECave/ogre,OGRECave/ogre,OGRECave/ogre,paroj/ogre