Remove gh-actions approval workflows in favor of new repo setting (#4525)

* Remove gh-actions approval workflows in favor of new repo setting

.github/workflows/pr-approval-check.yml

@@ -1,45 +0,0 @@
-name: PR Approval Check
-
-on:
-  workflow_run:
-    workflows: ["Receive PR"]
-    types: ["completed"]
-
-permissions:
-  actions: read
-
-jobs:
-  approval:
-    runs-on: ubuntu-slim
-    steps:
-      - name: Download artifact from triggering run
-        uses: actions/download-artifact@v6
-        with:
-          run-id: ${{ github.event.workflow_run.id }}
-          name: prnum
-          github-token: ${{ github.token }}
-
-      - name: Read inputs
-        id: get-prnum
-        run: |
-          set -euo pipefail
-          echo "prnum=$(cat prnum.txt)" >> "$GITHUB_OUTPUT"
-
-      - name: Mint installation token
-        id: app-token
-        uses: actions/[email protected]
-        with:
-          app-id: ${{ secrets.PR_APPROVAL_CHECK_APP_ID }}
-          private-key: ${{ secrets.PR_APPROVAL_CHECK }}
-
-      - name: Require Product Eng approval
-        uses: trufflesecurity/pr-approval-check@main
-        with:
-          org: trufflesecurity
-          approver_team: product-eng
-          owner: ${{ github.event.workflow_run.repository.owner.login }}
-          repo: ${{ github.event.workflow_run.repository.name }}
-          head: ${{ github.event.workflow_run.head_sha }}
-          number: ${{ steps.get-prnum.outputs.prnum }}
-          github_token: ${{ steps.app-token.outputs.token }}
-

.github/workflows/receive-pr.yml

@@ -1,24 +0,0 @@
-name: "Receive PR"
-
-on:
-  pull_request_target:
-    types: [opened, synchronize, reopened, ready_for_review]
-  pull_request_review:
-    types: [submitted, edited, dismissed]
-
-jobs:
-  prnum:
-    runs-on: ubuntu-slim
-    steps:
-      - name: Determine PR Number
-        id: build
-        run: |
-          echo "PR: ${{ github.event.pull_request.number }}"
-          echo "${{ github.event.pull_request.number }}" > prnum.txt
-      - name: Submit
-        uses: actions/upload-artifact@v5
-        with:
-          name: prnum
-          path: prnum.txt
-          retention-days: 1
-