Hi,

Whilst working on the Reproducible Builds effort [0], we noticed that
pywavelets could not be built reproducibly.

This is because the package shipped different contents depending on
whether 'nocheck' is specified. The package was removing some files
only if the tests were run, so if the tests were *not* run, those
files would be shipped.

Patch attached.

 [0] https://reproducible-builds.org/


Regards,