Remove gitlab CI thing

.gitlab-ci.yml

@@ -1,12 +0,0 @@
-build:
-  image: docker:20
-  stage: build
-  services:
-    - docker:20-dind
-  variables:
-    IMAGE_TAG: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
-  script:
-    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
-    - docker buildx build --push --platform linux/amd64 --tag $IMAGE_TAG .
-    - docker buildx build --push --platform linux/arm64 --tag $IMAGE_TAG .
-