Public bug reported:

There is this patch added to the python3-urllib3 package:
```
From: Daniele Tricoli <er...@mornie.org>
Date: Thu, 8 Oct 2015 13:19:46 -0700
Subject: Do not use embedded copy of python-six.

Forwarded: not-needed

Patch-Name: 01_do-not-use-embedded-python-six.patch
```
This removes six.py from /usr/lib/python3/dist-packages/urllib3/packages/. 
However, other packages reply on six.py being there, such as 
https://github.com/dopstar/requests-ntlm2/. Removing six.py breaks those 
packages, resulting in tracebacks like:

```
$ python3 -c 'from requests_ntlm2 import HttpNtlmAuth'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/local/lib/python3.8/dist-packages/requests_ntlm2/__init__.py", 
line 1, in <module>
    from .adapters import HttpNtlmAdapter, HttpProxyAdapter
  File "/usr/local/lib/python3.8/dist-packages/requests_ntlm2/adapters.py", 
line 10, in <module>
    from .connection import HTTPConnection as _HTTPConnection
  File "/usr/local/lib/python3.8/dist-packages/requests_ntlm2/connection.py", 
line 9, in <module>
    from requests.packages.urllib3.packages.six.moves.http_client import (
ModuleNotFoundError: No module named 'requests.packages.urllib3.packages.six
```

If the file is not put back, at least having a symlink there would be
nice.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: python3-urllib3 1.25.8-2
Uname: Linux 5.7.0-050700-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Mon Sep 28 13:57:21 2020
InstallationDate: Installed on 2018-04-20 (892 days ago)
InstallationMedia: Kubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: python-urllib3
UpgradeStatus: Upgraded to focal on 2020-09-04 (23 days ago)

** Affects: python-urllib3 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

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https://bugs.launchpad.net/bugs/1897633

Title:
  Removing six.py from package breaks other packages

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