Remove win32tz.py ?

[da4089]

The vobject package includes support for obtaining timezone information from the Windows registry, implemented in the win32tz.py file. It is not imported by any of the other vobject source files: it appears to have been provided basically as a helpful facility if needed by a client application.

This file looks like it has never been ported to Python 3: it imports _winreg (renamed to winreg in 3.0), and uses xrange() (without six.moves), for example.

It seems also that dateutil provides equivalent functionality from version 2.5.0, which I imagine is much better maintained.

With the change to API v1.0, this file could be removed, with a recommendation to switch to using dateutil instead. This would need an assessment of whether there's actually anything unique about what is implemented, vs. what's in dateutil.

[da4089]

I guess really it should be deprecated, rather than removed.

[return42]

I think it can be removed .. at least this module is not py3 compatible --> return42@35e3ccf532#diff-16a068e726d774b7e02c57fdbaea48a806343fcbc18e032c9ee5995bf45ced07R1-R5