remove gitlab ci config for now

.gitlab-ci.yml

-image: registry.gitlab.tugraz.at/dbp/middleware/api/main:v9
-
-variables:
-  COMPOSER_CACHE_DIR: "$CI_PROJECT_DIR/_composer_cache"
-
-cache:
-  key: ${CI_PROJECT_PATH}
-  paths:
-    - _composer_cache
-
-stages:
-  - test
-  - deploy
-
-.test_defaults: &test_defaults
-  script:
-    - sudo update-alternatives --set php "/usr/bin/${PHP}"
-    - composer install
-    - composer symfony:dump-env test
-    - ./bin/phpunit -v
-    - mkdocs build -f docs/mkdocs.yml
-    - ./composer-foreach install
-    - ./composer-foreach test
-
-test-php7.3:
-  stage: test
-  variables:
-    PHP: "php7.3"
-  <<: *test_defaults
-
-test-php7.4:
-  stage: test
-  variables:
-    PHP: "php7.4"
-  <<: *test_defaults
-
-psalm:
-  stage: test
-  allow_failure: true
-  script:
-    - sudo update-alternatives --set php /usr/bin/php7.3
-    - ./composer-foreach install
-    - ./composer-foreach run psalm
-
-phpstan:
-  stage: test
-  allow_failure: true
-  script:
-    - sudo update-alternatives --set php /usr/bin/php7.3
-    - ./composer-foreach install
-    - ./composer-foreach run phpstan
-
-cs-fixer:
-  stage: test
-  allow_failure: true
-  script:
-    - sudo update-alternatives --set php /usr/bin/php7.3
-    - ./composer-foreach install
-    - ./composer-foreach run cs
-
-.deploy_defaults: &deploy_defaults
-  except:
-    - schedules
-  stage: deploy
-  script:
-    - sudo update-alternatives --set php /usr/bin/php7.3
-    # Add ssh key
-    - mkdir -p ~/.ssh
-    - echo "${DEPLOY_KEY}" | tr -d '\r' > ~/.ssh/id_rsa
-    - chmod 700 ~/.ssh && chmod 600 ~/.ssh/id_rsa
-    - ssh-keyscan -t rsa "${DEPLOY_HOST}" >> ~/.ssh/known_hosts
-    # Deploy
-    - dep deploy "${CI_ENVIRONMENT_NAME}"
-    - echo "Deployed to ${CI_ENVIRONMENT_URL}"
-    # Simple health check
-    - curl --max-time 10 --retry 3 --output /dev/null --silent --show-error --fail --location "${CI_ENVIRONMENT_URL}"
-
-deploy_development:
-  only:
-    refs:
-      - master
-  environment:
-    name: development
-    url: https://mw-dev.tugraz.at
-  variables:
-    DEPLOY_HOST: mw01-dev.tugraz.at
-    DEPLOY_KEY: "$DEPLOY_SSH_KEY"
-  <<: *deploy_defaults
-
-deploy_demo:
-  only:
-    refs:
-      - demo
-  environment:
-    name: demo
-    url: https://api-demo.tugraz.at
-  variables:
-    DEPLOY_HOST: mw01-dev.tugraz.at
-    DEPLOY_KEY: "$DEPLOY_SSH_KEY"
-  <<: *deploy_defaults
-
-deploy_production:
-  only:
-    refs:
-      - production
-  environment:
-    name: production
-    url: https://api.tugraz.at
-  variables:
-    DEPLOY_HOST: mw01-prod.tugraz.at
-    DEPLOY_KEY: "$DEPLOY_SSH_KEY"
-  <<: *deploy_defaults