remove config.h references, was added for automake build system rev around 124-126 but isnt used by any build systems now.

source/gameengine/SceneGraph/SG_Node.cpp

@@ -30,10 +30,6 @@
 #include "SG_ParentRelation.h"
 #include <algorithm>
 
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
 using namespace std;