Detaches the {#vertex_named} `name` {Vertex} from
the graph, recursively removing any non-root vertices that were orphaned in
the process @param [String] name @return [Array] the vertices which have been detached
# File lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph.rb, line 168
def detach_vertex_named(name)
log.detach_vertex_named(self, name)
end
