Remove copy of fast PBKDF2 algorithm

[tiran]

BPO	38134
Nosy	@gpshead, @tiran, @miss-islington
PRs	bpo-38134: Remove PKBDF2_HMAC_fast from _hashopenssl #16028 [3.8] bpo-38134: Remove PKBDF2_HMAC_fast from _hashopenssl (GH-16028) #16034 bpo-38137: Re-add OpenSSL 1.0.2 compat #16051

^{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/tiran'
closed_at = <Date 2019-09-12.12:25:32.513>
created_at = <Date 2019-09-12.11:13:37.010>
labels = ['extension-modules', 'type-feature', '3.8', '3.9']
title = 'Remove copy of fast PBKDF2 algorithm'
updated_at = <Date 2019-09-12.14:12:11.545>
user = 'https://github.com/tiran'

bugs.python.org fields:

activity = <Date 2019-09-12.14:12:11.545>
actor = 'christian.heimes'
assignee = 'christian.heimes'
closed = True
closed_date = <Date 2019-09-12.12:25:32.513>
closer = 'christian.heimes'
components = ['Extension Modules']
creation = <Date 2019-09-12.11:13:37.010>
creator = 'christian.heimes'
dependencies = []
files = []
hgrepos = []
issue_num = 38134
keywords = ['patch']
message_count = 3.0
messages = ['352111', '352132', '352136']
nosy_count = 3.0
nosy_names = ['gregory.p.smith', 'christian.heimes', 'miss-islington']
pr_nums = ['16028', '16034', '16051']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue38134'
versions = ['Python 3.8', 'Python 3.9']

[tiran]

bpo bpo-18582 added a C implementation of PBKDF2 algorithm. Back then Python still supported OpenSSL versions with a slow version of PBKDF2-HMAC. Nowadays all supported OpenSSL versions contain an optimized version of the password derivation algorithm.

[gpshead]

New changeset 64117e0 by Gregory P. Smith (Christian Heimes) in branch 'master':
bpo-38134: Remove PKBDF2_HMAC_fast from _hashopenssl (GH-16028)
64117e0

[miss-islington]

New changeset 80e3365 by Miss Islington (bot) in branch '3.8':
bpo-38134: Remove PKBDF2_HMAC_fast from _hashopenssl (GH-16028)
80e3365