chore!: remove deprecated template

gitlab-ci.yml

@@ -1,33 +0,0 @@
-#
-# NOTE: DEPRECATED: please switch to the CI/CD Component or include "templates/nix-gitlab-ci.yml"
-#
-variables:
-  # latest | latest-cachix | latest-attic etc.
-  NIX_CI_IMAGE_TAG: latest
-stages:
-  - build
-  - trigger
-nix-ci:build:
-  stage: build
-  image: registry.gitlab.com/technofab/nix-gitlab-ci/nix-ci:${NIX_CI_IMAGE_TAG}
-  before_script:
-    - source setup_nix_ci
-  script:
-    # build the generated-gitlab-ci.yml
-    - nix build .#gitlab-ci-config
-    - install result generated-gitlab-ci.yml
-  after_script:
-    # upload to binary cache
-    - finalize_nix_ci
-  artifacts:
-    paths:
-      - generated-gitlab-ci.yml
-nix-ci:trigger:
-  stage: trigger
-  needs:
-    - nix-ci:build
-  trigger:
-    include:
-      - artifact: generated-gitlab-ci.yml
-        job: nix-ci:build
-    strategy: depend