Remove build-gdk-image, e2e:test-on-gdk, and retag-gdk-image jobs

.gitlab/ci/build-images.gitlab-ci.yml

@@ -29,34 +29,6 @@ build-qa-image as-if-foss:
     - .as-if-foss
     - .build-images:rules:build-qa-image-as-if-foss
-retag-gdk-image:
-  extends:
-    - .base-image-build
-    - .build-images:rules:retag-gdk-image
-  tags:
-    - docker
-  stage: build-images
-  needs: []
-  script:
-    - |
-      image="registry.gitlab.com/gitlab-org/gitlab-development-kit/asdf-bootstrapped-verify/main"
-      tag=$(awk '/ARG GDK_SHA=/ {print $2}' qa/gdk/Dockerfile.gdk | sed 's/.*=//g')
-      skopeo login -u $RETAG_GDK_IMAGE_TOKEN_NAME -p $RETAG_GDK_IMAGE_TOKEN $CI_REGISTRY
-      skopeo copy docker://${image}:${tag} docker://${image}:stable-${tag}
-
-build-gdk-image:
-  extends:
-    - .base-image-build-buildx
-    - .build-images:rules:build-gdk-image
-  tags:
-    - saas-linux-xlarge-amd64
-  stage: build-images
-  needs:
-    - job: retag-gdk-image
-      optional: true
-  script:
-    - run_timed_command "scripts/build_gdk_image"
-
 # NOTE: release-tools verifies the presence on this job for a commit that is
 # candidate to an auto-deploy package. This job name can't be changed without
 # changing the code in release-tools.

.gitlab/ci/qa.gitlab-ci.yml

@@ -199,18 +199,3 @@ e2e:package-and-test-nightly:
     QA_RUN_TYPE: nightly
     PIPELINE_NAME: E2E Omnibus GitLab Nightly
     DYNAMIC_PIPELINE_YML: package-and-test-nightly-pipeline.yml
-
-e2e:test-on-gdk:
-  extends:
-    - .e2e-trigger-base
-    - .qa:rules:e2e:test-on-gdk
-  stage: qa
-  needs:
-    - build-gdk-image
-    - e2e-test-pipeline-generate
-  variables:
-    QA_RUN_TYPE: e2e-test-on-gdk
-    PIPELINE_NAME: E2E GDK
-    DYNAMIC_PIPELINE_YML: test-on-gdk-pipeline.yml
-    SKIP_MESSAGE: Skipping test-on-gdk due to mr containing only quarantine changes!
-    GDK_IMAGE: "${CI_REGISTRY_IMAGE}/gitlab-qa-gdk:${CI_COMMIT_SHA}"