Fix flake8 warning F401: ... imported but unused

[vstinner]

BPO	32156
Nosy	@terryjreedy, @vstinner, @serhiy-storchaka
PRs	bpo-32156: Remove unused imports #4614

^{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 2018-05-29.21:52:08.484>
created_at = <Date 2017-11-28.15:07:16.018>
labels = ['3.7', 'library']
title = 'Fix flake8 warning F401: ... imported but unused'
updated_at = <Date 2018-05-29.21:52:08.483>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2018-05-29.21:52:08.483>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2018-05-29.21:52:08.484>
closer = 'vstinner'
components = ['Library (Lib)']
creation = <Date 2017-11-28.15:07:16.018>
creator = 'vstinner'
dependencies = []
files = []
hgrepos = []
issue_num = 32156
keywords = ['patch']
message_count = 4.0
messages = ['307126', '307141', '307205', '318106']
nosy_count = 3.0
nosy_names = ['terry.reedy', 'vstinner', 'serhiy.storchaka']
pr_nums = ['4614']
priority = 'normal'
resolution = 'out of date'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue32156'
versions = ['Python 3.7']

[vstinner]

Attached PR removes unused imports.

[serhiy-storchaka]

I suggest to split your patch on several PR for different domains, and let the domain experts review changes separately. IDLE changes look mostly harmless to me. But changes in distutils should be made with a large care.

[terryjreedy]

Idlelib deletions done.
pathbrowser, bpo-32100, PR-4626
configdialog, bpo-30781, PR-4627

[vstinner]

I suggest to split your patch on several PR for different domains, and let the domain experts review changes separately.

Right. I should recreate multiple PRs with fewer changes per PR.

I close this issue.