Revert "package.sh: When downloading files, if file exists, check that it has the right size"
Revert "package.sh: When downloading files, if file exists, check that it has the right size"

It was cherry picked by mistake...

This reverts commit 9156c89caf7f31a74ed87648228f15706ce8adcd.

alephobjects/Cura,alephobjects/Cura,alephobjects/Cura