remove unneeded method

src/edmonds.cpp

@@ -83,19 +83,6 @@ std::vector<NodeId> path_to_forest_root(Graph const & graph, NodeId id)
    return retval;
 }
 
-__attribute__((noinline))
-NodeId find_outer_vertex(Graph const & graph)
-{
-   for(NodeId id = 0; id < graph.num_nodes(); ++id)
-   {
-      if (not graph.node(id).scanned and graph.is_outer(id))
-      {
-         return id;
-      }
-   }
-   return invalid_node_id;
-}
-
 void collect_exposed_vertices(Graph & graph, std::stack<NodeId> & container)
 {
    std::stack<NodeId>().swap(container);