Remove "linux" special case when using zip

[stippi2]

The "bestzip" package will already use the native zip, if available. Inside a docker container (node.js), zip may actually not be available, but bestzip still works in this case.

[cla-assistant[bot]]

All committers have signed the CLA.

[cla-assistant[bot]]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}