Revert "Update rolac.conf"

This reverts commit bd722933dc.

deploy/vm/nginx/conf.d/rolac.conf

@@ -1,12 +1,3 @@
-# SignalR/WebSocket: when the client sends "Upgrade: websocket" we must forward
-# "Connection: upgrade"; on ordinary requests (negotiate POST, long-polling) the
-# Upgrade header is empty and we send "Connection: close" instead. A conf.d file
-# is included inside the http{} context, so this top-level map is valid here.
-map $http_upgrade $connection_upgrade {
-  default upgrade;
-  ''      close;
-}
-
 server {
   listen 80;
   server_name _;
@@ -32,25 +23,6 @@ server {
     proxy_set_header   X-Forwarded-Proto $scheme;
   }
 
-  # SignalR hubs -> api container. Must be proxied to Kestrel like /api/; without
-  # this block /hubs/* fell through to "location /" (the static app), whose nginx
-  # 405s the negotiate POST so the connection never reaches the backend. The
-  # Upgrade/Connection headers + http_version 1.1 let the WebSocket transport
-  # establish instead of degrading to long-polling.
-  location /hubs/ {
-    set $upstream_api api;
-    proxy_pass         http://$upstream_api:8080$request_uri;
-    proxy_http_version 1.1;
-    proxy_set_header   Upgrade $http_upgrade;
-    proxy_set_header   Connection $connection_upgrade;
-    proxy_set_header   Host $host;
-    proxy_set_header   X-Real-IP $remote_addr;
-    proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
-    proxy_set_header   X-Forwarded-Proto $scheme;
-    proxy_buffering    off;
-    proxy_read_timeout 100s;
-  }
-
   # Everything else -> the Angular static app (its own nginx does SPA fallback).
   location / {
     set $upstream_app app;