Cleaned up inbludes and unused code

include/osg/Drawable

@@ -19,7 +19,7 @@
 #include <osg/BufferObject>
 #include <osg/PrimitiveSet>
 #include <osg/RenderInfo>
-#include <osg/Group>
+#include <osg/Node>
 
 
 #ifndef GL_NV_occlusion_query

include/osg/Geode

@@ -14,8 +14,7 @@
 #ifndef OSG_GEODE
 #define OSG_GEODE 1
 
-#include <osg/Node>
-#include <osg/NodeVisitor>
+#include <osg/Group>
 #include <osg/Drawable>
 
 namespace osg {

src/osg/Geode.cpp

@@ -11,14 +11,8 @@
  * OpenSceneGraph Public License for more details.
 */
 #include <osg/Geode>
-#include <osg/Geometry>
 #include <osg/Notify>
 
-#include <stdio.h>
-#include <math.h>
-
-#define square(x)   ((x)*(x))
-
 using namespace osg;
 
 Geode::Geode()