Identical expression was checked twice (found by cppcheck).

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4978 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CQuake3ShaderSceneNode.cpp

@@ -262,7 +262,6 @@ E_SCENE_NODE_RENDER_PASS CQuake3ShaderSceneNode::getRenderStage() const
 	else
 	if (	strstr ( Shader->name.c_str(), "flame" ) ||
 			group->isDefined( "surfaceparm", "water" ) ||
-			group->isDefined( "sort", "underwater" ) ||
 			group->isDefined( "sort", "underwater" )
 		)
 	{