Use this if you are using igraph from R
| without_attr {igraph} | R Documentation | 
Construtor modifier to remove all attributes from a graph
without_attr()
Other constructor modifiers: 
simplified(),
with_edge_(),
with_graph_(),
with_vertex_(),
without_loops(),
without_multiples()
g1 <- make_ring(10)
g1
g2 <- make_(ring(10), without_attr())
g2