Revert "Merge pull request #65 from sourceboat/http2"

This reverts commit d59a69c.

Author: Kevin Buchholz

Diff for: etc/nginx/conf.d/default.conf

@@ -5,9 +5,9 @@ map $http_x_forwarded_proto $is_https {
 
 server {
     server_name _;
-    listen 8080 http2 default_server;
-    listen [::]:8080 http2 default_server;
-    
+    listen 8080 default_server;
+    listen [::]:8080 default_server;
+
     client_max_body_size 50M;
 
     index index.php index.html;