RFR: 8255894: Remove unused StubRoutines::_zero_aligned_words

[Claes Redestad]

On Wed, 4 Nov 2020 12:37:16 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> _zero_aligned_words was a SPARC-only optimization added by JDK-7059037
>
> Marked as reviewed by shade (Reviewer).

@shipilev thanks for verifying that (and for reviewing)!

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PR: https://git.openjdk.java.net/jdk/pull/1053