gossiper: remove calls to global get_gossiper from within the gossiper itself
gossiper: remove calls to global get_gossiper from within the gossiper itself

gossiper is a peering_sharded_service, so it has access to sharded<gossiper>.
Remove the global call.

scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla