RFR: 8268727: Remove unused slowpath locking method in OptoRuntime [v2]

[Dean Long]

On Mon, 21 Jun 2021 12:31:59 GMT, Miao Zheng <github.com+20216587+miao-zheng at openjdk.org> wrote:

>> 8268727: Remove unused slowpath locking method in OptoRuntime
>
> Miao Zheng has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR.

Looks good, and trivial.  It's strange that some pre-commit tests failed on Windows.

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Marked as reviewed by dlong (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/4490