Revert "include server name header" (#53779)

Author: heiskr

config/kubernetes/production/services/webapp.yaml

@@ -7,9 +7,8 @@ metadata:
   annotations:
     moda.github.net/domain-name: 'docs-internal.github.com'
     moda.github.net/dns-registration-enabled: 'false'
-    moda.github.net/load-balancer-type: public-external-http
-    moda.github.net/send-server-name-header:
-      'true'
+    moda.github.net/load-balancer-type:
+      public-external-http
       # moda.github.net/allowed-ips: '23.235.32.0/20,43.249.72.0/22,103.244.50.0/24,103.245.222.0/23,103.245.224.0/24,104.156.80.0/20,140.248.64.0/18,140.248.128.0/17,146.75.0.0/17,151.101.0.0/16,157.52.64.0/18,167.82.0.0/17,167.82.128.0/20,167.82.160.0/20,167.82.224.0/20,172.111.64.0/18,185.31.16.0/22,199.27.72.0/21,199.232.0.0/1'
     # ipv6 addresses not included
     # curl -i  "https://api.fastly.com/public-ip-list"