Remove MacOS 9-specific module macurl2path.py

[yan12125]

BPO	28325
Nosy	@ronaldoussoren, @ned-deily, @yan12125
PRs	[Do Not Merge] Convert Misc/NEWS so that it is managed by towncrier #552

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2016-10-02.02:09:53.819>
created_at = <Date 2016-10-01.10:15:54.750>
labels = ['OS-mac', '3.7', 'library']
title = 'Remove MacOS 9-specific module macurl2path.py'
updated_at = <Date 2017-03-31.16:36:22.909>
user = 'https://github.com/yan12125'

bugs.python.org fields:

activity = <Date 2017-03-31.16:36:22.909>
actor = 'dstufft'
assignee = 'none'
closed = True
closed_date = <Date 2016-10-02.02:09:53.819>
closer = 'ned.deily'
components = ['Library (Lib)', 'macOS']
creation = <Date 2016-10-01.10:15:54.750>
creator = 'yan12125'
dependencies = []
files = []
hgrepos = []
issue_num = 28325
keywords = []
message_count = 4.0
messages = ['277805', '277842', '277843', '277850']
nosy_count = 4.0
nosy_names = ['ronaldoussoren', 'ned.deily', 'python-dev', 'yan12125']
pr_nums = ['552']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue28325'
versions = ['Python 3.7']

[yan12125]

As per PEP-11, MacOS 9 support is removed in Python 2.4. There are some leftovers in CPython code base, among which the macurl2path module is an example. I propose to remove it for cleaner codes.

In f6785bce54b5 (bpo-7908), reference to macurl2path was removed from Lib/urllib.py, and macurl2path.py says:

Do not import directly; use urllib instead.

So, unlike the concern in bpo-9850, I bet there are no third party codes importing this module. It can be removed from CPython safely.

Added some Mac experts.

[python-dev]

New changeset 07c593845994 by Ned Deily in branch 'default':
Issue bpo-28325: Remove vestigal MacOS 9 macurl2path module and its tests.
https://hg.python.org/cpython/rev/07c593845994

[ned-deily]

Thanks for the suggestion; I didn't even know that was still around. Because it is a bit late in the game for 3.6 and to be extra cautious, I decided to remove it starting with 3.7.

[yan12125]

Thanks for landing all the changes :) It's definitely surprising to see those old CPython codes.