protected static void removeNode(MoralGraph graph, MoralGraphNode node) {
ArrayList<GraphNode> neighbors = node.getNeighbors();
for (int i = 0; i < neighbors.size(); i++) {
MoralGraphNode neighbor = (MoralGraphNode) neighbors.get(i);
neighbor.removeNeighbor(node);
}
graph.removeNode(node);
}
