hosts/library: drop chat.ai.vimium.com proxying

hosts/library/ai.nix

@@ -16,6 +16,7 @@ in
     enable = true;
     package = pkgs.unstable.open-webui;
     port = 8081;
+    host = "0.0.0.0";
     environment =
       let
         clientId = "open-webui";

hosts/library/nginx.nix

@@ -33,25 +33,6 @@
             '';
           };
         };
-        "chat.ai.vimium.com" = {
-          listen = [
-            {
-              addr = "127.0.0.1";
-              port = 8001;
-            }
-          ];
-          locations."/" = {
-            proxyPass = "http://localhost:8081";
-            extraConfig = proxyConfig + ''
-              # Disable proxy buffering for better streaming response from models
-              proxy_buffering off;
-
-              # Increase max request size for large attachments and long audio messages
-              client_max_body_size 20M;
-              proxy_read_timeout 10m;
-            '';
-          };
-        };
         "jellyfin.vimium.com" = {
           default = true;
           listen = [