chore: Remove obsolete gitlab-ci yaml

Repository is not on gitlab anymore, left over
from migration

.gitlab-ci.yml

@@ -1,136 +0,0 @@
-#
-# This pipeline requires packages to be switched on under the repository settings. Otherwise, you will 403s when
-# uploading to the package repo is triggered.
-#
-# Variables to setup in GitLab CI/CD settings of the project
-# 
-# The variables with BASE64 postfixes need to contain the base64 encoded data. Otherwise, masking
-# in GitLab won't work due to not matching their pre-defined regex 
-#
-# CI_PIGSTALL_DATA_PREFIX_BASE64
-# CI_PIGSTALL_LINK_BASE64
-# CI_PIGSTALL_PHP_SESSION_ID
-# CI_PIGSTALL_SESSION_BASE64
-# 
-# CI_TOOLS_UPLOAD_KEY
-# CI_TOOLS_UPLOAD_URL
-# CI_TOOLS_URL
-
-image: docker:stable
-
-variables:
-    DOCKER_TLS_CERTDIR: "/certs"
-    DIST_PACKAGE_RELATIVE_PATH: "build/docker/bemanitools.zip"
-    PACKAGE_REGISTRY_URL: "${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/generic/bemanitools"
-
-services:
-  - docker:19.03.8-dind
-
-stages:
-  - build
-  - upload
-  - release
-
-build:
-  stage: build
-  only:
-    refs:
-      - master
-      - tags
-  before_script:
-    - apk update && apk add make > /dev/null
-  script:
-    - make build-docker
-  artifacts:
-    paths:
-      - build
-    expire_in: 1 week
-
-upload-package-registry:
-  stage: upload
-  image: curlimages/curl:latest
-  only:
-    refs:
-      - master
-      - tags
-  dependencies:
-    - build
-  script:
-    - |
-      if [ "${CI_COMMIT_TAG}" ]; then
-        version="${CI_COMMIT_TAG}"
-      else
-        version="${CI_COMMIT_SHORT_SHA}"
-      fi
-    - |
-      curl \
-        --silent \
-        --fail \
-        --show-error \
-        --header "JOB-TOKEN: ${CI_JOB_TOKEN}" \
-        --upload-file "${DIST_PACKAGE_RELATIVE_PATH}" \
-        $PACKAGE_REGISTRY_URL/${version}/bemanitools.zip
-
-upload-tools-page:
-  stage: upload
-  image: curlimages/curl:latest
-  only:
-    refs:
-      - tags
-  dependencies:
-    - build
-  script:
-    - |
-      curl \
-        --silent \
-        --fail \
-        --show-error \
-        --connect-timeout 5 \
-        --max-time 10 \
-        --retry 5 \
-        -F "key=${CI_TOOLS_UPLOAD_KEY}" \
-        -F "filename=${CI_PROJECT_NAME}-v${CI_COMMIT_TAG}.zip" \
-        -F "file=@${DIST_PACKAGE_RELATIVE_PATH}" \
-        ${CI_TOOLS_UPLOAD_URL}
-
-release-gitlab:
-  stage: release
-  image: registry.gitlab.com/gitlab-org/release-cli:v0.8.0
-  only:
-    refs:
-      - tags
-  script:
-    - version="$CI_COMMIT_TAG"
-    - release_message="$(scripts/ci/create-release-message.sh "${version}" < CHANGELOG.md)"
-    - |
-      release-cli create \
-        --name "bemanitools ${version}" \
-        --description="${release_message}" \
-        --tag-name ${version} \
-        --assets-link "{\"name\":\"Distribution binaries\",\"url\":\"${PACKAGE_REGISTRY_URL}/${version}/bemanitools.zip\"}"
-
-release-pigstall:
-  stage: release
-  image: curlimages/curl:latest
-  only:
-    refs:
-      - tags
-  script:
-    - version="${CI_COMMIT_TAG}"
-    - changelog_excerpt="$(scripts/ci/create-release-message.sh "${version}" < CHANGELOG.md)"
-    - release_message="$(printf "bemanitools ${version} released\n${CI_TOOLS_URL}/bemanitools-v${version}.zip\n${changelog_excerpt}")"
-    - session="$(echo "$CI_PIGSTALL_SESSION_BASE64" | base64 -d)"
-    - data_prefix="$(echo "$CI_PIGSTALL_DATA_PREFIX_BASE64" | base64 -d)"
-    - link="$(echo "$CI_PIGSTALL_LINK_BASE64" | base64 -d)"
-    - |
-      curl \
-        --silent \
-        --fail \
-        --connect-timeout 5 \
-        --max-time 10 \
-        --retry 5 \
-        --show-error \
-        -H 'Content-Type: application/x-www-form-urlencoded' \
-        -H "Cookie: PHPSESSID=$CI_PIGSTALL_PHP_SESSION_ID; session=${session}" \
-        --data-raw "${data_prefix}&body=${release_message}" \
-        "${link}"