[ci] Remove QEMU override test

The test is broken because version v9.2.0-2025-02-11 does not compile due
to a now-discontinued mirror (debian wikimedia). The newly released version
v9.2.0-2026-06-19 does compile but its scripting system is different and not
currently compatible with the master branch. Disabling this check is therefore
the simplest option.

Signed-off-by: Amaury Pouly <amaury.pouly@opentitan.org>

Author: pamaury

.github/workflows/ci.yml

@@ -600,43 +600,6 @@ jobs:
         run: |
           ./bazelisk.sh test //sw/device/tests:rom_exit_immediately_sim_qemu_base
 
-  qemu_local_dev_test:
-    name: Test QEMU local development override
-    runs-on: ubuntu-22.04
-    needs: quick_lint
-    if: ${{ github.event_name != 'merge_group' }}
-    steps:
-      - uses: actions/checkout@v6
-        with:
-          fetch-depth: 0
-          path: opentitan
-      - name: Prepare environment
-        uses: ./opentitan/.github/actions/prepare-env
-        with:
-          service_account_json: '${{ secrets.BAZEL_CACHE_CREDS }}'
-          working-directory: opentitan
-      - uses: actions/checkout@v6
-        with:
-          repository: lowRISC/qemu
-          ref: v9.2.0-2025-02-11
-          fetch-depth: 0
-          path: qemu
-      - name: Check that overrides works
-        run: |
-          # The following packages are required to build QEMU.
-          sudo apt-get install -y ninja-build libpixman-1-dev libglib2.0-dev
-          # We need to symlink the BUILD file and create an empty REPO file.
-          ln -s $PWD/opentitan/third_party/qemu/BUILD.qemu_opentitan.bazel qemu/BUILD.bazel
-          touch qemu/REPO.bazel
-          # Just make sure all expected targets are there after building.
-          opentitan/bazelisk.sh build --override_repository="+qemu+qemu_opentitan_src=$PWD/qemu/" //third_party/qemu/...
-      - name: Upload error logs
-        if: failure()
-        uses: actions/upload-artifact@v7
-        with:
-          name: qemu-override-build-logs
-          path: qemu/build/*.log
-
   # Single job that we can gate pull requests and merge queues on:
   merge_blocker:
     name: Merge blocker