CI changes after branch removal

.gitlab-ci.yml

 image: alpine:edge
 before_script:
-  - apk --update --no-cache add npm brotli git
+  - apk --update --no-cache add npm git
   - export COMMIT_TIME=$(git show -s --format=%ct $CI_COMMIT_SHA)
   - npm ci
 
 production:
   script:
-    # Switch to main branch
-    - git fetch origin main
-    - git checkout main
+    - git fetch origin dev
+    - git checkout dev
     - git pull
 
     # Build for production
@@ -34,37 +33,4 @@ production:
     - git add .
     - git commit -m "New version from ${COMMIT_TIME}"
     - git push origin main
-  environment:
-    name: production
-    url: https://tailorbird3d.rwth-aachen.de/
-  only:
-    - main
   when: manual
-
-pages:
-  script:
-    # Switch to dev branch
-    - git fetch origin dev
-    - git checkout dev
-    - git pull
-
-    # Check for favicon updates
-    - npm install -g cli-real-favicon
-    - real-favicon check-for-update --fail-on-update faviconData.json
-
-    # Build for GitLab Pages
-    - npm run build-gitlab
-    - cp -a dist/. public/
-
-    # Compression for GitLab Pages
-    - find public -type f -regex '.*\.\(htm\|html\|txt\|text\|js\|css\)$' -exec gzip -f -k {} \;
-    - find public -type f -regex '.*\.\(htm\|html\|txt\|text\|js\|css\)$' -exec brotli -f -k {} \;
-  artifacts:
-    paths:
-      - public
-    expire_in: "500"
-  environment:
-    name: testing
-    url: https://kg.pages.git-ce.rwth-aachen.de/tailorbird
-  only:
-    - dev