[VULN-649] ci: Remove deprecated scan workflow (#7091)

.github/workflows/scan.yml

@@ -1,48 +0,0 @@
-name: Scan Pull Requests
-
-on:
-  workflow_dispatch:
-  pull_request:
-    types: [opened, synchronize, reopened]
-    branches-ignore:
-      - main
-  pull_request_target: # zizmor: ignore[dangerous-triggers]
-    types: [opened, synchronize, reopened]
-    branches:
-      - main
-
-permissions: {}
-
-jobs:
-  check-run:
-    name: Check PR run
-    uses: bitwarden/gh-actions/.github/workflows/check-run.yml@main
-    permissions:
-      contents: read
-
-  sast:
-    name: Checkmarx
-    uses: bitwarden/gh-actions/.github/workflows/_checkmarx.yml@main
-    needs: check-run
-    secrets:
-      AZURE_SUBSCRIPTION_ID: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
-      AZURE_TENANT_ID: ${{ secrets.AZURE_TENANT_ID }}
-      AZURE_CLIENT_ID: ${{ secrets.AZURE_CLIENT_ID }}
-    permissions:
-      contents: read
-      pull-requests: write
-      security-events: write
-      id-token: write
-
-  quality:
-    name: Sonar
-    uses: bitwarden/gh-actions/.github/workflows/_sonar.yml@main
-    needs: check-run
-    secrets:
-      AZURE_SUBSCRIPTION_ID: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
-      AZURE_TENANT_ID: ${{ secrets.AZURE_TENANT_ID }}
-      AZURE_CLIENT_ID: ${{ secrets.AZURE_CLIENT_ID }}
-    permissions:
-      contents: read
-      pull-requests: write
-      id-token: write