Revert "Merge branch 'add-untamper-my-lockfile' into 'master'"

This reverts merge request !54311

.gitlab-ci.yml

@@ -111,5 +111,4 @@ include:
   - local: .gitlab/ci/dast.gitlab-ci.yml
   - local: .gitlab/ci/workhorse.gitlab-ci.yml
   - local: .gitlab/ci/graphql.gitlab-ci.yml
-  - project: 'gitlab-org/frontend/untamper-my-lockfile'
-    file: '.gitlab-ci-template.yml'
+  - local: .gitlab/ci/verify-lockfile.gitlab-ci.yml

.gitlab/ci/verify-lockfile.gitlab-ci.yml

+verify_lockfile:
+  stage: test
+  image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.7.2-git-2.29-lfs-2.9-node-14.15-yarn-1.22-graphicsmagick-1.3.34
+  needs: []
+  rules:
+    - changes:
+        - yarn.lock
+  script:
+    - npm config set @dappelt:registry https://gitlab.com/api/v4/projects/22564149/packages/npm/
+    - npx lockfile-lint@4.3.7 --path yarn.lock --allowed-hosts yarn --validate-https
+    - npx @dappelt/untamper-my-lockfile --lockfile yarn.lock