Unmonitor `router.kazu634.com`:

```
diff --git a/site-cookbooks/sensu-custom/recipes/server_checks.rb b/site-cookbooks/sensu-custom/recipes/server_checks.rb
index 0577f3a..60fd071 100644
--- a/site-cookbooks/sensu-custom/recipes/server_checks.rb
+++ b/site-cookbooks/sensu-custom/recipes/server_checks.rb
@@ -44,7 +44,7 @@ end
   end
 end

-%w{ home router }.each do |host|
+%w{ home }.each do |host|
   sensu_check "#{host}.kazu634.com" do
     command "/usr/bin/sudo /usr/lib/nagios/plugins/check_ping -H #{host}.kazu634.com -w 200,30% -c 500,50%"
     handlers ["default"]
```