Remove markdown link checker (#11722)

The Markdown link checker currently deployed has served its purpose for
the time being. It is being removed to avoid failed checks on PRs, while
we evaluate alternative solutions used by other HashiCorp repositories.

.github/workflows/linkchecker.yml

@@ -1,39 +0,0 @@
-on:
-  pull_request:
-    paths:
-      - 'website/**'
-
-name: Check markdown links on modified website files
-jobs:
-  vercel-deployment-poll:
-    runs-on: ubuntu-latest
-    timeout-minutes: 5 #cancel job if no deployment is found within x minutes
-    outputs:
-      url: ${{ steps.waitForVercelPreviewDeployment.outputs.url }}
-    steps:
-    - name: Wait for Vercel preview deployment to be ready
-      uses: nywilken/wait-for-vercel-preview@master
-      id: waitForVercelPreviewDeployment
-      with:
-       token: ${{ secrets.GITHUB_TOKEN }}
-       max_timeout: 600 # in seconds, set really high to leverage job timeout-minutes values
-       allow_inactive: true # needed to ensure we get a URL for a previously released deployment
-  markdown-link-check:
-    needs: vercel-deployment-poll
-    if: ${{ needs.vercel-deployment-poll.outputs.url != '' }}
-    runs-on: ubuntu-latest
-    steps:
-    - name: Get Deployment URL
-      run:
-        echo "DEPLOYMENT_URL=${{ needs.vercel-deployment-poll.outputs.url }}" >> $GITHUB_ENV
-    - name: Checkout source branch
-      uses: actions/checkout@master
-    - name: Check links
-      uses: gaurav-nelson/github-action-markdown-link-check@v1
-      with:
-        use-quiet-mode: 'yes'
-        file-extension: 'mdx'
-        check-modified-files-only: 'yes'
-        folder-path: 'website/content'
-        base-branch: 'main'
-        config-file: '.mlc_config.json'

.github/workflows/scheduled-link-checker.yml

@@ -1,19 +0,0 @@
-on:
-  schedule:
-  - cron: "45 0 * * *"
-name: Check Markdown links on main branch
-jobs:
-  markdown-link-check:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Set deployment URL env
-      run:
-        echo "DEPLOYMENT_URL=https://packer-git-main.hashicorp.vercel.app" >> $GITHUB_ENV
-    - uses: actions/checkout@master
-    - uses: gaurav-nelson/github-action-markdown-link-check@v1
-      with:
-        use-quiet-mode: 'yes'
-        file-extension: 'mdx'
-        folder-path: 'website/content'
-        base-branch: 'main'
-        config-file: '.mlc_config.json'

.mlc_config.json

@@ -1,24 +0,0 @@
-{
-   "ignorePatterns": [
-    {
-      "pattern": "^https://example.com"
-    },
-    {
-      "pattern": "^https://ec2.custom.endpoint.com"
-    },
-    {
-      "pattern": "^https://www.linode.com"
-    },
-    {
-      "pattern": "^https://oidref.com/"
-    }
-  ],
-  "replacementPatterns": [
-    {
-      "pattern": "^/",
-      "replacement": "{{env.DEPLOYMENT_URL}}/"
-    }
-  ],
-  "timeout": "20s",
-  "retryOn429": true
-}