Remove proxying headers from the auth service.

The headers should be set in the server that has the /validate endpoint
so we can get the correct client IP.

conf.d/auth.shore.co.il.conf

@@ -23,7 +23,6 @@ server {
     location / {
         proxy_pass              http://$auth:8080$request_uri;
         proxy_http_version      1.1;
-        include                 snippets/proxy-headers.conf;
         include                 snippets/allow-shore-ips.conf;
     }
 }