gha: Remove workflows related to backporting stuff

We're not doing backports anymore, as we're getting rid of the stable
branches in favour of having a better release cadence from the main
branch.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

.github/workflows/add-backport-label.yaml

@@ -1,91 +0,0 @@
-name: Add backport label
-
-on:
-  pull_request:
-    types:
-      - opened
-      - synchronize
-      - reopened
-      - edited
-      - labeled
-      - unlabeled
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  check-issues:
-    if: ${{ github.event.label.name != 'auto-backport' }}
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code to get gh-utils script
-        if: ${{ !contains(github.event.pull_request.labels.*.name, 'force-skip-ci') }}
-        uses: actions/checkout@v4
-
-      - name: Determine whether to add label
-        if: ${{ !contains(github.event.pull_request.labels.*.name, 'force-skip-ci') }}
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          CONTAINS_AUTO_BACKPORT: ${{ contains(github.event.pull_request.labels.*.name, 'auto-backport') }}
-        id: add_label
-        run: |
-          pr=${{ github.event.pull_request.number }}
-          linked_issues=$(./ci/gh-util.sh \
-            list-issues-for-pr "$pr" |\
-            grep -v "^\#" || true)
-          [ -z "${linked_issues}" ] && {
-            echo "::error::No linked issues for PR $pr"
-            exit 1
-          }
-          has_bug=false
-          for issue in $(echo "$linked_issues")
-          do
-            labels=$(./ci/gh-util.sh list-labels-for-issue "$issue")
-
-            label_names=$(echo $labels | jq -r '.labels[].name' || true)
-            if [[ "$label_names" =~ "bug" ]]; then
-              has_bug=true
-              break
-            fi
-          done
-
-          has_backport_needed_label=${{ contains(github.event.pull_request.labels.*.name, 'needs-backport') }}
-          has_no_backport_needed_label=${{ contains(github.event.pull_request.labels.*.name, 'no-backport-needed') }}
-
-          echo "add_backport_label=false" >> $GITHUB_OUTPUT
-          if [ $has_backport_needed_label  = true ] || [ $has_bug  = true ]; then
-            if [[ $has_no_backport_needed_label = false ]]; then
-              echo "add_backport_label=true" >> $GITHUB_OUTPUT
-            fi
-          fi
-
-          # Do not spam comment, only if auto-backport label is going to be newly added.
-          echo "auto_backport_added=$CONTAINS_AUTO_BACKPORT" >> $GITHUB_OUTPUT
-
-      - name: Add comment
-        if: ${{ !contains(github.event.pull_request.labels.*.name, 'force-skip-ci') && steps.add_label.outputs.add_backport_label == 'true' && steps.add_label.outputs.auto_backport_added == 'false' }}
-        uses: actions/github-script@v6
-        with:
-          script: |
-            github.rest.issues.createComment({
-              issue_number: context.issue.number,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              body: 'This issue has been marked for auto-backporting. Add label(s) backport-to-BRANCHNAME to backport to them'
-            })
-
-      # Allow label to be removed by adding no-backport-needed label
-      - name: Remove auto-backport label
-        if: ${{ !contains(github.event.pull_request.labels.*.name, 'force-skip-ci') && steps.add_label.outputs.add_backport_label == 'false' }}
-        uses: andymckay/labeler@e6c4322d0397f3240f0e7e30a33b5c5df2d39e90
-        with:
-          remove-labels: "auto-backport"
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Add auto-backport label
-        if: ${{ !contains(github.event.pull_request.labels.*.name, 'force-skip-ci') && steps.add_label.outputs.add_backport_label == 'true' }}
-        uses: andymckay/labeler@e6c4322d0397f3240f0e7e30a33b5c5df2d39e90
-        with:
-          add-labels: "auto-backport"
-          repo-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/auto-backport.yaml

@@ -1,33 +0,0 @@
-on:
-  pull_request_target:
-    types: ["labeled", "closed"]
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  backport:
-    name: Backport PR
-    runs-on: ubuntu-latest
-    if: |
-      github.event.pull_request.merged == true
-      && contains(github.event.pull_request.labels.*.name, 'auto-backport')
-      && (
-        (github.event.action == 'labeled' && github.event.label.name == 'auto-backport')
-        || (github.event.action == 'closed')
-      )
-    steps:
-      - name: Backport Action
-        uses: sqren/backport-github-action@v8.9.2
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          auto_backport_label_prefix: backport-to-
-
-      - name: Info log
-        if: ${{ success() }}
-        run: cat /home/runner/.backport/backport.info.log
-        
-      - name: Debug log
-        if: ${{ failure() }}
-        run: cat /home/runner/.backport/backport.debug.log

.github/workflows/require-pr-porting-labels.yaml

@@ -1,68 +0,0 @@
-# Copyright (c) 2020 Intel Corporation
-#
-# SPDX-License-Identifier: Apache-2.0
-#
-
-name: Ensure PR has required porting labels
-
-on:
-  pull_request_target:
-    types:
-      - opened
-      - reopened
-      - labeled
-      - unlabeled
-    branches:
-      - main
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  check-pr-porting-labels:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Install hub
-        if: ${{ !contains(github.event.pull_request.labels.*.name, 'force-skip-ci') }}
-        run: |
-          HUB_ARCH="amd64"
-          HUB_VER=$(curl -sL "https://api.github.com/repos/github/hub/releases/latest" |\
-            jq -r .tag_name | sed 's/^v//')
-          curl -sL \
-            "https://github.com/github/hub/releases/download/v${HUB_VER}/hub-linux-${HUB_ARCH}-${HUB_VER}.tgz" |\
-          tar xz --strip-components=2 --wildcards '*/bin/hub' && \
-          sudo install hub /usr/local/bin
-
-      - name: Checkout code to allow hub to communicate with the project
-        if: ${{ !contains(github.event.pull_request.labels.*.name, 'force-skip-ci') }}
-        uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 0
-
-      - name: Rebase atop of the latest target branch
-        if: ${{ !contains(github.event.pull_request.labels.*.name, 'force-skip-ci') }}
-        run: |
-          ./tests/git-helper.sh "rebase-atop-of-the-latest-target-branch"
-        env:
-          TARGET_BRANCH: ${{ github.event.pull_request.base.ref }}
-
-      - name: Install porting checker script
-        run: |
-          # Clone into a temporary directory to avoid overwriting
-          # any existing github directory.
-          pushd $(mktemp -d) &>/dev/null
-          git clone --single-branch --depth 1 "https://github.com/kata-containers/.github" && cd .github/scripts
-          sudo install pr-porting-checks.sh /usr/local/bin
-          popd &>/dev/null
-
-      - name: Stop PR being merged unless it has a correct set of porting labels
-        if: ${{ !contains(github.event.pull_request.labels.*.name, 'force-skip-ci') }}
-        env:
-          GITHUB_TOKEN: ${{ secrets.KATA_GITHUB_ACTIONS_TOKEN }}
-        run: |
-          pr=${{ github.event.number }}
-          repo=${{ github.repository }}
-
-          pr-porting-checks.sh "$pr" "$repo"