adjust clean up

Author: davegarthsimpson

.github/workflows/build.yml

@@ -434,8 +434,8 @@ jobs:
         if: runner.os == 'Windows' && matrix.config.working-directory
         shell: cmd
         run: |
-          rmdir /s /q "${{ matrix.config.working-directory }}"
-          rmdir /s /q "C:\actions-runner\_work\arduino-ide\arduino-ide"
+          rmdir /s /q "${{ matrix.config.working-directory }}\${{ env.BUILD_ARTIFACTS_PATH }}"
+          rmdir /s /q "${{ matrix.config.working-directory }}\${{ env.STAGED_CHANNEL_FILES_PATH }}"
 
   merge-channel-files:
     needs: