Clean up importlib for Python 3.4

[brettcannon]

BPO	15641
Nosy	@brettcannon, @ncoghlan, @asvetlov, @ericsnowcurrently
Files	issue15641.diff

^{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 = 'https://github.com/brettcannon'
closed_at = <Date 2012-11-05.07:35:37.195>
created_at = <Date 2012-08-13.20:00:34.953>
labels = ['type-feature']
title = 'Clean up importlib for Python 3.4'
updated_at = <Date 2012-11-05.07:35:37.192>
user = 'https://github.com/brettcannon'

bugs.python.org fields:

activity = <Date 2012-11-05.07:35:37.192>
actor = 'asvetlov'
assignee = 'brett.cannon'
closed = True
closed_date = <Date 2012-11-05.07:35:37.195>
closer = 'asvetlov'
components = []
creation = <Date 2012-08-13.20:00:34.953>
creator = 'brett.cannon'
dependencies = []
files = ['27852']
hgrepos = []
issue_num = 15641
keywords = ['patch']
message_count = 7.0
messages = ['168140', '172179', '172478', '174614', '174648', '174872', '174873']
nosy_count = 7.0
nosy_names = ['brett.cannon', 'ncoghlan', 'Arfrever', 'asvetlov', 'python-dev', 'eric.snow', 'lyapun']
pr_nums = []
priority = 'low'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue15641'
versions = ['Python 3.4']

[brettcannon]

importlib.abc.PyLoader and importlib.abc.PyPycLoader were both deprecated in 3.2 and slated for removal in Python 3.4. There is also some os2 stuff in importlib._bootstrap which can go as PEP-11 has os2 support slated for removal in Python 3.4.

[asvetlov]

What's about Finder?
Do you want to remove it also?

[brettcannon]

Finder is only documented as deprecated; actually making it work with a reasonable warning is too much of a pain for such little gain. So it can just stay in as there is no maintenance burden.

[lyapun]

Deleted code, docs, tests, and tests related stuff (like mocks). Test passes.

[brettcannon]

Thanks for the patch, Taras! It looks good and I will apply it when I have time (or some other core dev beats me to it).

[python-dev]

New changeset 48228fb874c1 by Andrew Svetlov in branch 'default':
Issue bpo-15641: Clean up deprecated classes from importlib
http://hg.python.org/cpython/rev/48228fb874c1

[asvetlov]

Thanks, Taras.