src/main/java/org/jboss/util/graph/Graph.java
public boolean removeEdge(Vertex<T> from, Vertex<T> to)
   {
      Edge<T> e = from.findEdge(to);
      if (e == null)
         return false;
      else
      {
         from.remove(e);
         to.remove(e);
         edges.remove(e);
         return true;
      }
   }
public boolean removeEdge(Vertex<T> from, Vertex<T> to)
   {
      Edge<T> e = from.findEdge(to);
      if (e == null)
         return false;
      else
      {
         from.remove(e);
         to.remove(e);
         edges.remove(e);
         return true;
      }
   }
Remove an Edge<T> from the graph
@param from - the Edge<T> starting vertex
@param to - the Edge<T> ending vertex
@return true if the Edge<T> exists, false otherwise