[issue37324] collections: remove deprecated aliases to ABC classes

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


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resolution:  -> duplicate
stage: patch review -> resolved
status: open -> closed
superseder:  -> collections.abc.Indexable

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37324>
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