cleanup workflow

.github/workflows/activation.yml

@@ -1,29 +0,0 @@
-#name: Acquire activation file
-#
-#on: [push]
-#
-#jobs:
-#  activation:
-#    name: Request manual activation file (${{ matrix.unityVersion }}) 🔑
-#    runs-on: ubuntu-latest
-#    strategy:
-#      fail-fast: false
-#      matrix:
-#        unityVersion:
-#          - 2019.2.11f1
-#          - 2019.3.15f1
-#
-#    steps:
-#      # Request manual activation file
-#      - name: Request manual activation file
-#        id: getManualLicenseFile
-#        uses: webbertakken/unity-request-manual-activation-file@v1.1
-#        with:
-#          unityVersion: ${{ matrix.unityVersion }}
-#
-#      # Upload artifact (Unity_v20XX.X.XXXX.alf)
-#      - name: Expose as artifact
-#        uses: actions/upload-artifact@v1
-#        with:
-#          name: ${{ steps.getManualLicenseFile.outputs.filePath }}
-#          path: ${{ steps.getManualLicenseFile.outputs.filePath }}