fix(ci): remove nginx config deploy from deploy-ui workflow

Nginx config is managed by script/setup/nginx.sh, not CI. The
gitea_ci user doesn't have permissions to write to /etc/nginx.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/deploy-ui.yml

@@ -5,7 +5,6 @@ on:
     branches: [main]
     paths:
       - "ui/**"
-      - "asset/nginx/**"
       - ".gitea/workflows/deploy-ui.yml"
   workflow_dispatch: {}
 
@@ -60,14 +59,3 @@ jobs:
             --exclude="*" \
             ui/dist/ \
             "gitea_ci@${RPM_REPO_HOST}:/var/www/rpm/"
-
-      - name: Deploy nginx config
-        run: |
-          rsync \
-            --archive \
-            --verbose \
-            --rsync-path="sudo rsync" \
-            --chown=root:root \
-            asset/nginx/rpm.lair.cafe.conf \
-            "gitea_ci@${RPM_REPO_HOST}:/etc/nginx/sites-available/rpm.lair.cafe.conf"
-          ssh "gitea_ci@${RPM_REPO_HOST}" "sudo nginx -t && sudo systemctl reload nginx"