Disable the build-queued hook

This can take an excessive amount of time. For example, on
hydra.nixos.org, a call to hydra-notify takes 0.7s even if there are
no plugins. So for an eval with ~45K new builds, the calls to
hydra-notify add up to about 9 hours.

The proper fix would be to pass a list of build IDs, or an eval ID.

src/script/hydra-eval-jobset

@@ -737,9 +737,9 @@ sub checkJobsetWrapped {
     Net::Statsd::increment("hydra.evaluator.evals");
     Net::Statsd::increment("hydra.evaluator.cached_evals") unless $jobsetChanged;
 
-    while (my ($id, $x) = each %buildMap) {
-        system("hydra-notify build-queued $id") if $x->{new};
-    }
+    #while (my ($id, $x) = each %buildMap) {
+    #    system("hydra-notify build-queued $id") if $x->{new};
+    #}
 
     # Store the error messages for jobs that failed to evaluate.
     my $msg = "";