fixup! Don't recursively call deregister_worker() on the current worker

Author: JamesWrigley

src/cluster.jl

@@ -1447,7 +1447,7 @@ function deregister_worker(pg, pid)
             # Notify the cluster manager of this workers death
             manage(w.manager, w.id, w.config, :deregister)
             if PGRP.topology !== :all_to_all || isclusterlazy()
-                for rpid in filter(!=(myid()), workers())
+                for rpid in other_workers()
                     try
                         remote_do(deregister_worker, rpid, pid)
                     catch