Theia blueprint - electron builder after-pack question

I am curious to know why the after-pack.js script only deletes these 2 things from the unzip-stream package? Any particular reason?

@akhileshraju thank you for the discussion, I’m not sure what the exact reasons may be but given the commits that added the change it seems to want to remove the test data and zip archive from unzip-stream which was found to not be useful and take up space: