when deleting multiple graphs in one go, host is listed for each graph multiple times, according to how many graphs are being deleted.
for example, deleting 4 graphs from a host named 'a' :

Graph "a" deleted from hosts "a","a","a","a"
Graph "a2" deleted from hosts "a","a","a","a"
Graph "a3" deleted from hosts "a","a","a","a"
Graph "a4" deleted from hosts "a","a","a","a"