Warning imp module is deprecated

[acabarbaye]

When using pywin32 on Python3, I get the following warning:

##[warning]the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses

There are few places in the code where the imp module is imported e.g.

pywin32/win32/Lib/pywintypes.py

Line 2 in d64fac8

import imp, sys, os

.

[knudsvik]

Should be closed as it is covered by #1256

[mhammond]

Thanks, it is a dupe of #1256

[mhammond]

I backed this out as it broke Python 2. I'm in the process of "formally" killing support for python 2, so I'll reapply it after that.

[mhammond]

Actually, it may not be just python 3 - see the failed jobs on master.