message: workflows: remove unneeded install
  protoc-gen-mavsdk is now installed automatically locally as part of the
  generation script.
diff: @@ -154,11 +154,6 @@ jobs:
  run: sudo apt-get update && sudo apt-get install -y clang-format-10
  - name: install pymavlink dependencies
  run: sudo apt-get install -y python3-future
  - - name: install protoc-gen-mavsdk
  - run: |
  - cd proto/pb_plugins
  - pip3 install --user -r requirements.txt
  - pip3 install --user -e .
  - uses: actions/cache@v2
  id: cache
  with:
  