[buildbot] ci: remove cleanup-pr-containers workflow

[LEDE Commits]

ynezz pushed a commit to buildbot.git, branch main:
https://git.openwrt.org/64696d96ed6c664b25bfc07fad4064397033868d

commit 64696d96ed6c664b25bfc07fad4064397033868d
Author: Petr Štetiar <ynezz at true.cz>
AuthorDate: Tue Jan 13 17:47:13 2026 +0100

    ci: remove cleanup-pr-containers workflow
    
    It needs a bit more time to debug this properly.
    
    Signed-off-by: Petr Štetiar <ynezz at true.cz>
---
 .github/workflows/cleanup-pr-containers.yml | 35 -----------------------------
 1 file changed, 35 deletions(-)

diff --git a/.github/workflows/cleanup-pr-containers.yml b/.github/workflows/cleanup-pr-containers.yml
deleted file mode 100644
index ddef073..0000000
--- a/.github/workflows/cleanup-pr-containers.yml
+++ /dev/null
@@ -1,35 +0,0 @@
-name: Cleanup PR Containers
-
-on:
-  pull_request:
-    types: [closed]
-
-jobs:
-  cleanup:
-    name: Delete PR container images
-    runs-on: ubuntu-latest
-    permissions:
-      packages: write
-
-    strategy:
-      matrix:
-        container_flavor:
-          - master
-          - worker
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout at v5
-
-      - name: Read Buildbot version
-        run: echo "BUILDBOT_VERSION=$(cat .github/buildbot-version)" >> $GITHUB_ENV
-
-      - name: Delete PR container image
-        uses: actions/delete-package-versions at v5
-        with:
-          package-name: buildbot/build${{ matrix.container_flavor }}-v${{ env.BUILDBOT_VERSION }}
-          package-type: container
-          delete-only-pre-release-versions: false
-          min-versions-to-keep: 0
-          delete-only-untagged-versions: false
-          version-pattern: pr-${{ github.event.pull_request.number }}