chore(storage): remove outdated servers.json CI and documentation

.github/workflows/update-servers-list.yml

@@ -1,98 +0,0 @@
-name: Update servers list
-on:
-  workflow_dispatch:
-    inputs:
-      provider:
-        description: "VPN Provider to update"
-        required: true
-        default: "all"
-        type: choice
-        options:
-          - all
-          - airvpn
-          - cyberghost
-          - expressvpn
-          - fastestvpn
-          - giganews
-          - hidemyass
-          - ipvanish
-          - ivpn
-          - mullvad
-          - nordvpn
-          - perfect privacy
-          - privado
-          - private internet access
-          - privatevpn
-          - protonvpn
-          - purevpn
-          - slickvpn
-          - surfshark
-          - torguard
-          - vpnsecure
-          - vpn unlimited
-          - vyprvpn
-          - windscribe
-  schedule:
-    - cron: "11 3 1 */2 *" # Run at 03:11 on the 1st of every 2nd month
-jobs:
-  update-servers-list:
-    if: github.repository == 'passteque/gluetun'
-    runs-on: ubuntu-latest
-    permissions:
-      actions: read
-      contents: write
-      pull-requests: write
-    steps:
-      - uses: actions/checkout@v6
-
-      - uses: actions/setup-go@v6
-        with:
-          go-version-file: go.mod
-
-      - name: Update servers list
-        run: |
-          SELECTED_PROVIDER="${{ github.event.inputs.provider || 'all' }}"
-
-          if [ "$SELECTED_PROVIDER" = "all" ]; then
-            FLAGS="-all"
-          else
-            FLAGS="-providers $SELECTED_PROVIDER"
-          fi
-
-          go run ./cmd/gluetun/main.go update $FLAGS \
-            -maintainer \
-            -proton-email "${{ secrets.PROTON_EMAIL }}" \
-            -proton-password "${{ secrets.PROTON_PASSWORD }}"
-
-      - name: Check for changes
-        run: |
-          if git diff --exit-code internal/storage/servers.json >/dev/null; then
-            echo "Error: internal/storage/servers.json was not modified."
-            exit 1
-          fi
-
-      - name: Check no other file changes
-        run: |
-          if ! git diff --exit-code --quiet ':!internal/storage/servers.json'; then
-            echo "Error: Unexpected changes detected in files other than servers.json"
-            git status --short
-            exit 1
-          fi
-
-      - name: Create Pull Request
-        id: createpr
-        uses: peter-evans/create-pull-request@v8
-        with:
-          branch-suffix: timestamp
-          branch: bot/update-servers-list
-          base: master
-          delete-branch: true
-          title: "feat(providers/${{ github.event.inputs.provider || 'all' }}): servers data update"
-          body: |
-            This PR was automatically generated by the [Update servers list](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}) workflow run.
-
-      # - name: Merge Pull Request
-      #   env:
-      #     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      #   run: |
-      #     gh pr merge ${{ steps.createpr.outputs.pull-request-number }} --auto -m -d