dnsdist: remove http2

Author: aptalca

dnsdist.subdomain.conf.sample

@@ -1,10 +1,10 @@
-## Version 2024/11/26
+## Version 2024/12/19
 # make sure that your container is named dnsdist
 # make sure that your dns has a cname set for dnsdist
 
 server {
-    listen 443 ssl http2;
-    listen [::]:443 ssl http2;
+    listen 443 ssl;
+    listen [::]:443 ssl;
 
     server_name dnsdist.*;