reverted 'getActiveObjects', island management will be improved for Bullet 2.74 release.

The implementation was error-prone and could lead to crashes.

See http://code.google.com/p/bullet/issues/detail?id=128

src/BulletCollision/CollisionDispatch/btCollisionWorld.h

@@ -84,10 +84,6 @@ protected:
 
 	btAlignedObjectArray<btCollisionObject*>	m_collisionObjects;
 	
-	///temporarily solution to keep track of active objects. This work-in-progress will improve when we refactor island management.
-	btAlignedObjectArray<btCollisionObject*>	m_activeObjects;
-
-
 	btDispatcher*	m_dispatcher1;
 
 	btDispatcherInfo	m_dispatchInfo;
@@ -98,9 +94,6 @@ protected:
 
 	btIDebugDraw*	m_debugDrawer;
 
-protected:
-
-	void	findActiveObjects();
 	
 public:
 
@@ -142,15 +135,6 @@ public:
 
 	virtual void	updateAabbs();
 
-	btCollisionObjectArray& getActiveObjects()
-	{
-		return m_activeObjects;
-	}
-
-	const btCollisionObjectArray& getActiveObjects() const
-	{
-		return m_activeObjects;
-	}
 	
 	virtual void	setDebugDrawer(btIDebugDraw*	debugDrawer)
 	{