Removed spdy support

config/nginx/onlyoffice-documentserver-ssl.conf

@@ -25,8 +25,8 @@ server {
 
 ## HTTPS host
 server {
-  listen 0.0.0.0:443 ssl spdy;
-  listen [::]:443 ssl spdy default_server;
+  listen 0.0.0.0:443 ssl;
+  listen [::]:443 ssl default_server;
   server_tokens off;
   root /usr/share/nginx/html;